All Tools
575 free browser-based tools — no accounts, no servers.
Character CounterCount characters, words, and sentences with platform limits.Social Character CounterCheck text length for X, LinkedIn, and Instagram limits.Instagram Line Break GeneratorAdd invisible line breaks to Instagram bios and captions so each line displays on its own row.Lorem Ipsum GeneratorGenerate placeholder text in standard, funny, or tech styles.Text RepeaterRepeat any text with custom separators and transforms.WhatsApp Text FormatterFormat bold, italic, strikethrough, and monospace for WhatsApp.Glitch Text GeneratorCreate zalgo, glitchy, and full-width text effects.Emoji to ASCIIConvert emoji to their Unicode code point representations.Special CharactersCopy math, currency, arrow, and other special symbols.Zero-Width SpaceCopy invisible Unicode zero-width space characters.Invisible Character DetectorPaste text to find and remove hidden zero-width spaces, BOM markers, and other invisible Unicode characters.Word Frequency AnalyzerCount word occurrences in any text, sorted by frequency. Great for SEO keyword density analysis.Morse Code TranslatorTranslate text to Morse code and decode Morse code back to text, with a full reference chart.Text to SpeechPaste any text and hear it read aloud using your browser's built-in voices. Adjust speed, pitch, and volume — free, no download needed.Text Line ToolsSort, deduplicate, shuffle, number, reverse, and trim lines of text instantly with 10 one-click operations.Flip Text GeneratorTurn text upside down using Unicode mirror characters, convert to fullwidth aesthetic text, or reverse your string.HTML Entity Encoder / DecoderEncode special HTML characters like &, <, >, ", ' into entities and decode them back to plain text instantly.Emoji PickerBrowse and copy emojis by category — smileys, animals, food, travel, activities, and more. Click any emoji to copy it instantly.Scrabble Score CalculatorCalculate the Scrabble tile score for any word or phrase. See each letter's point value highlighted by tier, from A (1pt) to Q and Z (10pts).Anagram CheckerCheck if two words or phrases are anagrams of each other. See a side-by-side letter frequency comparison and sorted letter view to spot which letters match or differ.Palindrome CheckerCheck if a word, phrase, or sentence reads the same forwards and backwards. Customize how case, spaces, and punctuation are handled. Famous examples included.String Similarity CheckerCompare two strings and measure how similar they are using Levenshtein distance, Jaccard similarity, and longest common substring. Instant percentage scores.Text SummarizerSummarize any long text using extractive keyword-frequency analysis. The tool highlights the most important sentences and generates a concise summary — no AI, runs entirely in your browser.Font GeneratorGenerate fancy Unicode text in 14 styles — bold, italic, script, double-struck, Gothic, monospace, circled, full-width, upside down, strikethrough, and more. Copy and paste anywhere.Word ScramblerScramble any word or phrase with one click, or practice unscrambling letters to find the hidden word. Great for word games and puzzles.Syllable CounterCount syllables in any word, sentence, or paragraph instantly. See syllable counts per word, averages, and check if your poem is a haiku.Text to Handwriting GeneratorConvert typed text into realistic handwriting on lined, graph, or blank paper. Choose font style, ink color, and download as PNG.Random Word GeneratorGenerate random nouns, adjectives, verbs, or adverbs instantly. Filter by starting letter and word length — perfect for writing, games, and brainstorming.Keyword Density AnalyzerAnalyze keyword frequency and density in your content. Paste any article and see top keywords ranked by how often they appear — ideal for SEO content analysis and on-page optimization.Text to NATO AlphabetConvert any text into the NATO phonetic alphabet for clear oral communication.Email NormalizerNormalize email addresses by removing dots, plus aliases, and lowercasing — useful for deduplication and data cleaning.Text to UnicodeConvert text to Unicode code points and back — see the U+ hex values for every character in your string.List ConverterProcess column-based list data with options to sort, reverse, deduplicate, add prefix/suffix, and change separators.Numeronym GeneratorGenerate numeronyms like i18n or k8s — abbreviations where a number replaces the middle letters.Text to Emoji ConverterTurn text into emoji flag letters, keycap sequences or a decorative emoji alphabet, with a character-by-character breakdown of what mapped where.ASCII Box Drawing GeneratorSurround text in single, double, rounded, heavy or dashed box frames sized from the real character widths, with alignment and padding options and one-click copy.Text Table MakerPaste delimited data, edit it in an on-screen grid, then export a properly aligned Markdown, CSV, HTML or box-drawing table with per-column alignment.Bionic Reading ConverterBold the leading letters of every word to create a fixation point that helps you read faster, with control over strength, minimum word length, spacing and emphasis colour.Text Diff VisualizerCompare two texts with a real line diff and word-level highlighting inside changed lines. Side-by-side or unified views, collapsible context, stats and a downloadable .diff file.Markdown Badge GeneratorDesign shields-style badges and generate the SVG locally — label, message, colour, style, logo and link — then copy the Markdown, HTML, reStructuredText or raw SVG.Slug to Title ConverterTurn URL slugs and file names into properly capitalised titles, with real title-case rules, a configurable stop-word list, acronym preservation and a batch mode.Pluralize & Singularize WordsConvert words to plural or singular with the full English rule set — including irregulars and Latin forms — and a count-aware mode, showing which rule matched each word.Pangram & Isogram CheckerCheck any text for pangrams, perfect pangrams, isograms, lipograms and alphabet anagrams, with an A–Z status grid and a letter-frequency chart.Word Ladder SolverFind the shortest word ladder between two words with a real breadth-first search, step through the solution, and see the search statistics or use your own word list.ROT13 & Caesar Brute ForcerApply ROT13 or any Caesar shift, then brute-force all 25 alternatives at once with letter-frequency analysis that suggests the most likely shift.Phonetic Name MatcherMatch names that sound alike using Double Metaphone and Soundex, grouping duplicates into phonetic clusters — ideal for deduplicating messy contact lists.Roman Numeral Converter ProConvert numbers to Roman numerals and back, including values above 3,999, with the additive and subtractive breakdown of each numeral and a rules chart.Morse Code Audio PlayerConvert text to Morse and hear it played with correctly timed dots, dashes and gaps at your chosen speed and tone, including Farnsworth spacing for learning.Character Frequency AnalyzerBreak text down into exact character counts, letter, digram and trigram frequencies, entropy and a comparison against standard English letter frequency.Rhyme FinderFind perfect, near and slant rhymes using real phonetic endings rather than spelling, grouped by syllable count, with a rhyme-scheme builder for your own lines.Lyric Syllable & Stress CounterCount syllables per lyric line, mark stressed and unstressed beats, identify the meter and see how consistent it is — useful for songwriting and poetry.Anagram SolverSolve anagrams from an English word list, including multi-word solutions for a whole phrase, with wildcard tiles, Scrabble scores and a letters-remaining tray.
HEX to RGBConvert hex color codes to RGB values.HEX to HSLConvert hex color codes to HSL values.RGB to HEXConvert RGB values to hex color codes.RGB to HSVConvert RGB values to HSV/HSB values.RGB to CMYKConvert RGB values to CMYK for print.RGB to LABConvert RGB to CIE L*a*b* color space.WCAG Color Contrast CheckerCheck AA/AAA accessibility contrast compliance for text and background colors.Pixel to Rem/Em ConverterConvert px, rem, and em values with configurable base font size.Image Color Palette ExtractorUpload an image and extract dominant color swatches instantly.Color Name FinderFind the nearest named color from HEX or RGB input.Resistor Color Code CalculatorConvert 4-band resistor colors to ohms and reverse from value to bands.HSL to HEXConvert HSL values to hex color codes.HSL to HSVConvert HSL to HSV/HSB color values.HSV to HSLConvert HSV/HSB to HSL color values.HSV to RGBConvert HSV/HSB values to RGB.CMYK to RGBConvert CMYK print values to RGB.LAB to RGBConvert CIE L*a*b* values to RGB.Color PickerPick any color with HSL sliders and instantly get HEX, RGB, HSL, HSV, and CMYK values.Color Palette GeneratorGenerate complementary, analogous, triadic, split-complementary, tetradic, and monochromatic palettes from any base color.Color MixerBlend any two colors together with a custom ratio. See the mixed result as HEX, RGB, and HSL with a full gradient spectrum.Color Shades GeneratorGenerate a complete 11-step color scale (50–950) from any base color. Copy as CSS custom properties or a Tailwind config snippet.Color Blindness SimulatorSimulate how colors appear to people with color blindness. Preview Protanopia, Deuteranopia, Tritanopia, and Achromatopsia side by side to test designs for accessibility.Random Color GeneratorGenerate random hex colors instantly. Get HEX, RGB, and HSL values, lock palette swatches, and copy any color code for your next design project.Screen Color PickerPick any color from your screen using the EyeDropper tool and get HEX, RGB, HSL, and CMYK values instantly. Includes color history and manual hex input.Tailwind Color Palette GeneratorGenerate a complete Tailwind CSS color palette from any base color. Get all 11 shades (50–950) with hex values, copy as tailwind.config.js, CSS variables, or JSON.Colour Contrast MatrixCheck every colour pairing in a palette at once. An N×N grid of WCAG contrast ratios showing AA and AAA pass or fail, with accessible alternatives suggested.Colour Picker WheelPick a colour on an interactive HSV wheel, then generate harmonies, simulate colour blindness, check WCAG contrast and copy the value in any modern colour format.
Age CalculatorCalculate exact age in years, months, days, and hours.Date CalculatorAdd or subtract days, weeks, or months from a date.Business Days CalculatorCalculate working days between two dates.Date FormatterFormat any date in 12 different patterns.Unix Timestamp ConverterConvert Unix epoch seconds or milliseconds to readable dates and back.Time Zone ConverterConvert times between world time zones.Week NumberFind the ISO and regular week number for any date.Countdown TimerCount down to any future date and time.Pregnancy Due Date CalculatorEnter your last menstrual period or conception date to get your estimated due date, current week, trimester, and pregnancy milestones.World ClockSee the current time in New York, London, Tokyo, Sydney, Dubai and 15+ cities simultaneously. Add or remove cities freely.Ovulation CalculatorEnter your last period date and cycle length to find your ovulation day, fertile window, next period, and a full calendar view.Time Duration CalculatorCalculate the exact duration between two times or two dates. Get results in hours, minutes, seconds, and decimal formats.Age on Other PlanetsFind out how old you'd be on every planet. Each planet orbits the Sun at a different speed, so your age varies across the solar system.Meeting PlannerFind the best time to meet across multiple time zones. See what time it is for each participant and spot the ideal overlap window where everyone is available.Moon Phase CalculatorFind the moon phase for any date. See the phase name, illumination percentage, and days until the next full or new moon in the 29.5-day lunar cycle.Work Hours CalculatorCalculate total hours worked across multiple time entries. Supports overnight shifts, optional hourly rate for earnings calculation, and weekly totals.Speed Distance Time CalculatorSolve for speed, distance, or time — enter any two values and instantly calculate the third. Supports km/h, mph, m/s, knots, km, miles, hours, minutes, and seconds.Age Difference CalculatorCalculate the exact age difference between two people or any two dates. See the gap in years, months, and days, plus both current ages.Sunrise & Sunset CalculatorGet exact sunrise, sunset, solar noon, and day length for any location and date. Enter coordinates or use your GPS location.Biorhythm CalculatorSee your physical, emotional, and intellectual cycle charts based on your birth date. Find your peak days, low days, and critical transition days.Zodiac Sign CalculatorEnter your birthday to instantly find your Western zodiac sign and Chinese zodiac animal. See your element, traits, ruling planet, and compatible signs.Timeline VisualizerTurn dated events into a properly scaled timeline where the gaps reflect real time. Cluster busy periods, add era bands and a today marker, then export as PNG or SVG.Working Days VisualizerSee the working days, weekends and public holidays in any month, quarter or year for a range of countries, with a custom weekend definition and per-holiday countdowns.Meeting Time FinderSlide across a 24-hour grid and see who is in working hours, awake or asleep in each city, with the best overlap windows ranked and a calendar file for the slot you pick.Work Hours Time Zone ConverterAdd each teammate's city and see everyone's working and off hours on one 24-hour strip, find the overlap window, and download the agreed slot as a calendar file.
Figma ShortcutsEssential keyboard shortcuts for Figma designers.Photoshop ShortcutsAdobe Photoshop keyboard shortcuts cheat sheet.Gmail ShortcutsGmail keyboard shortcuts to manage email faster.Twitter / X ShortcutsTwitter and X keyboard shortcuts guide.YouTube ShortcutsYouTube keyboard shortcuts for video control.Discord ShortcutsDiscord shortcuts for chat, navigation, and voice.Pipedrive ShortcutsPipedrive CRM keyboard shortcuts guide.
CSS Gradient GeneratorCreate linear CSS gradients with a live preview.CSS Box Shadow GeneratorBuild and preview CSS box-shadow values with one-click copy.CSS Glassmorphism GeneratorGenerate frosted-glass CSS with backdrop blur and copy-ready styles.QR Code GeneratorGenerate custom QR codes for any text or URL.WiFi QR Code GeneratorGenerate a scannable QR code to share WiFi credentials instantly.Letter Profile PictureGenerate avatar images from initials with custom colors.Discord Server Icon GeneratorCreate a 512×512 Discord server icon with initials or emoji, custom colors, and font.Gradient Avatar GeneratorCreate a 400×400 gradient avatar with initials, linear or radial gradients, and custom fonts.Spinner WheelCustomizable random spinner wheel with your own options.Minecraft Shape GeneratorGenerate Minecraft block shapes and pixel-art structures.Minecraft Pixel Art GeneratorConvert any image to Minecraft blocks at up to 512×512, with an optional aspect-ratio lock, materials list, and .schem / .litematic downloads.Perler Bead Pattern GeneratorUpload any image and convert it to a Perler fuse-bead pattern with color codes and bead counts.Hama Bead Pattern GeneratorUpload any image and convert it to a Hama fuse-bead pattern with Hama color IDs and bead counts.Diamond Painting GeneratorUpload a photo and convert it to a diamond painting pattern with DMC colors, symbols, and drill counts.Cross Stitch Pattern GeneratorTurn any photo into a cross-stitch pattern with DMC floss color codes and stitch counts.Embroidery Pattern GeneratorTurn any photo into a hand-embroidery pattern with DMC thread color codes and stitch counts.Minecraft Sign Text GeneratorDesign Minecraft sign text with color codes, live 4-line preview, and the 15-character limit.Minecraft Map Art GeneratorConvert any image to a 128×128 Minecraft map art build plan with block color counts.LEGO Mosaic GeneratorUpload a photo and convert it to a LEGO brick mosaic with color IDs and piece counts.Paint by Numbers GeneratorUpload a photo and get a numbered paint-by-numbers template with color legend and PNG download.Minecraft Color Code GeneratorPreview and copy legacy Minecraft text color and formatting codes.D&D Dice RollerRoll RPG dice notation like 2d8+5 and 4d6dl1 with breakdowns.Minecraft Enchantment Cost CalculatorEstimate anvil XP costs when combining enchanted books.YouTube Timestamp Link GeneratorGenerate shareable YouTube links that start at a specific time.Reading Time EstimatorEstimate how long text takes to read with adjustable words-per-minute speed.CSS Flexbox GeneratorVisually configure Flexbox properties with a live preview and copy the generated CSS.CSS Border Radius GeneratorSet each corner independently, choose from preset shapes like circle and pill, and copy the ready-to-use CSS border-radius.CSS Text Shadow GeneratorAdd multiple text shadow layers with offset, blur, and color controls. Live preview and copy the CSS text-shadow property.CSS Clip Path GeneratorPick from 17 preset shapes — triangle, hexagon, star, arrow, and more — and copy the ready-to-use CSS clip-path value.Gradient Text GeneratorCreate gradient text effects for your website. Pick colors, direction, and font settings, then copy the ready-to-use CSS or inline HTML.CSS Grid GeneratorVisually build CSS Grid layouts. Set columns, rows, track sizes (fr, px, auto), and gaps, then copy the ready-to-use CSS.CSS Animation GeneratorGenerate CSS keyframe animations with a live preview. Choose from 12 presets — fade, slide, bounce, spin, shake, and more. Adjust duration, delay, timing, and iterations.Social Media Image SizesThe complete reference for every social media image dimension — Instagram, Facebook, X/Twitter, LinkedIn, YouTube, TikTok, Pinterest, and Snapchat profiles, covers, and posts.Pixel Art MakerDraw pixel art on an 8×8, 16×16, or 32×32 grid in your browser. Pick colors, click or drag to paint, use the eraser or fill — create retro sprites with no download needed.ASCII Art GeneratorGenerate copy-ready ASCII text banners in multiple styles.CSS Variable GeneratorGenerate a complete CSS design token system from a brand color. Get 11-shade color scales, spacing, typography, border-radius, and shadow variables ready to paste.Placeholder Image GeneratorGenerate custom placeholder images in your browser. Set width, height, background color, text color, and custom label. Download as PNG or copy the SVG data URL.Meme GeneratorCreate memes online — no watermark. Upload your own image, add top and bottom text in Impact font, customize size and color, and download as PNG. 100% browser-based.Online Signature MakerDraw your signature with your mouse or finger and download it as a transparent PNG. No watermark, no sign-up — runs entirely in your browser.Barcode GeneratorCreate Code 128, Code 39, EAN-13, and UPC-A barcodes instantly in your browser. Customize colors, bar size, and download as PNG or copy as SVG.Image CompressorCompress JPEG, PNG, and WebP images in your browser with no upload to any server. Reduce file size by up to 90% with adjustable quality.Favicon GeneratorGenerate a favicon from text or emoji in your browser. Choose background color, text color, and shape — download as PNG at 16×16, 32×32, 64×64, or 128×128 pixels. No upload needed.Neumorphism GeneratorGenerate neumorphic CSS box shadows with a live preview. Adjust size, radius, distance, intensity, and shape — copy ready-to-use CSS for flat, pressed, concave, or convex neumorphic elements.Typography Scale GeneratorGenerate a modular type scale using classic ratios like the golden ratio, perfect fourth, or major third. Preview each step and copy as CSS custom properties or a Tailwind config snippet.Code Screenshot GeneratorTurn code snippets into beautiful shareable images. Choose from 5 themes, set a gradient background, toggle line numbers and window chrome — download as PNG with no watermark.Minecraft Skin ViewerUpload a 64×64 Minecraft skin PNG and preview your character in a 2D front-view Steve model. Download the preview as PNG — 100% browser-based.Minecraft Banner GeneratorDesign Minecraft banners with 16 dye colors and 23 patterns. Add up to 6 layers, preview live, and generate the Java Edition /give command with NBT data.Graph Paper GeneratorGenerate downloadable graph paper as PNG. Choose grid size, line color, paper size (A4, Letter, Square), and grid type — square, dot, or isometric.Wireframe MakerCreate simple UI wireframes in your browser. Add draggable boxes, set labels and dimensions, choose a background color, and download as PNG.Font Pairing GeneratorBrowse 20 curated Google Font pairings for headings and body text. Filter by style, preview live with editable text, and copy the CSS import.Image CropperCrop any image online for free. Set crop position and size with sliders, lock aspect ratios like 16:9 or 1:1, preview live, and download the result as PNG — no upload required.Gradient Mesh GeneratorCreate smooth mesh gradient backgrounds with a 3×3 color grid. Bilinear interpolation blends your colors seamlessly — export as PNG or copy the CSS radial-gradient code.Screenshot BeautifierMake your screenshots look stunning. Add gradient backgrounds, padding, rounded corners, shadows, and browser or macOS window frames. Download as a high-resolution PNG.Camera Exposure CalculatorSolve the exposure triangle — find equivalent aperture, shutter speed, and ISO combinations, with an EV reference table and ND filter calculator.D&D Character GeneratorCreate a random D&D 5e character with stats, traits, backstory, and equipment — perfect for new players and one-shots.Minecraft Armor Stand GeneratorCreate custom Minecraft armor stand poses and equipment, and copy the /summon command for Java and Bedrock Edition.Image to ASCII ArtTurn any photo into ASCII art in your browser. Adjust the width, character ramp and colour mode, then copy the text or download it as an image.Image to Emoji MosaicConvert a photo into a mosaic made of emoji. Pick the grid size and emoji set, then copy the result as text or download it as a PNG.Halftone GeneratorTurn any image into a halftone dot pattern. Control dot size, spacing, shape and screen angle, in mono or two colours.Photo to Pencil SketchConvert a photo into a pencil sketch or line drawing. Adjust edge strength, threshold and line thickness with a live before-and-after preview.Low Poly Art GeneratorTurn any image into low-poly triangular artwork. Choose the number of points and edge weighting, then download as PNG or SVG.Instagram Grid SplitterSplit an image into a grid of tiles for Instagram carousels. Choose a 3×3, 3×2 or 2×2 layout and download every tile as a ZIP.Image AnnotatorAnnotate screenshots with arrows, boxes, text and blur regions. Full undo and redo, then download the result as a PNG.Knitting & Crochet Chart GeneratorTurn a photo into a colourwork knitting or crochet chart, with a symbol per colour and a full stitch legend.Image to Braille ArtConvert an image into Unicode braille art. Adjust the width and threshold, then copy the text or download it.Image Posterizer & Colour SeparatorPosterize an image down to a set of flat colours and export each one as a separate layer, ready for screen printing.Fractal GeneratorExplore the Mandelbrot and Julia sets in your browser. Zoom, pan, choose from several palettes and save the view as a PNG.Spirograph GeneratorDraw spirograph and harmonograph curves with adjustable radii and pen offset. Layer several curves and export as PNG or SVG.Mandala GeneratorDesign symmetrical mandalas with adjustable segments, rings, shapes and colours. Randomise for instant art, then export as PNG or SVG.Seamless Pattern GeneratorGenerate tileable background patterns and preview them repeated 3×3 so you can see they really do tile seamlessly.Tartan GeneratorDesign a tartan from a sett of colours and thread counts, with a true twill weave rather than a flat grid. Download as PNG.Tilt-Shift Effect GeneratorMake any photo look like a miniature scale model with a simulated shallow depth of field. Control the focus band, angle, blur and falloff, then download the result.Vignette GeneratorAdd a smooth vignette to any photo. Adjust intensity, radius, feathering, roundness and colour, and shift the centre off-axis.Film Grain GeneratorAdd realistic photographic grain to an image. Control the amount, grain size, colour noise and tonal weighting, with 35mm, 16mm and high-ISO presets.Duotone ConverterRecolour any image with a two-tone gradient. Pick the shadow and highlight colours, set the midpoint and contrast, or start from a classic duotone preset.Glitch Effect GeneratorTurn a photo into glitch art. Add RGB channel splits, displaced slices, scanlines and noise, with a reseedable randomiser.Circular Image CropCrop any image to a circle, squircle or rounded rectangle with a transparent background. Drag to position, zoom, and download a clean PNG.Polaroid Photo MakerFrame a photo as a classic Polaroid with the wide lower border and an optional handwritten caption. Adjust the frame colour, rotation and paper texture.Photo Collage MakerCombine several photos into a grid collage. Choose the layout, spacing, corner radius and background, position each photo, then download the finished collage.Watermark GeneratorAdd a text or logo watermark to an image. Set the position, opacity, scale, rotation and colour, or tile it diagonally across the whole picture.Before / After ComparisonCombine two images into a single before-and-after comparison with a draggable divider. Label each side and export the split view as a PNG.Image StackerCombine several images into one, stacked vertically, horizontally, or in a grid with a chosen gap and background colour.Image Colour InverterInvert an image's colours, or convert light screenshots to dark mode while keeping coloured accents intact. Adjust hue, brightness, contrast and saturation.Background ReplacerReplace a transparent or flat background with a colour, gradient or pattern, or flood-fill a picked colour with a tolerance and feather control.SVG Colour EditorUpload or paste an SVG, see every fill and stroke colour it uses, and recolour each one with a picker. Copy or download the edited SVG.Bulk Image ResizerResize, convert and compress many images at once. Set the dimensions, fit mode, output format and quality, then download everything as a ZIP.Device Mockup GeneratorPlace a screenshot inside a phone, tablet, laptop or monitor frame. Position and scale the screen, then download a presentation-ready mockup PNG.Browser Window MockupWrap a screenshot in a browser window frame. Choose the browser style, set the URL and tab titles, and adjust the corner radius and shadow.CSS Filter GeneratorBuild a CSS filter chain visually. Sliders for blur, brightness, contrast, grayscale, hue-rotate, invert, saturate and sepia, with a live preview and copy-ready CSS.CSS Transform GeneratorBuild a CSS transform visually. Translate, scale, rotate, skew and 3D rotate with a draggable origin, a live preview and copy-ready CSS.SVG Blob GeneratorGenerate smooth organic blob shapes as SVG paths. Adjust the complexity, roundness, size and colours, or randomise until you like one, then copy the SVG.SVG Wave Divider GeneratorCreate the wavy SVG dividers used between website sections. Pick a style, height, amplitude and colours, and copy the markup or download the SVG.CSS Pattern GeneratorBuild pure-CSS background patterns — stripes, checks, dots, zigzags, hexagons and more — with live preview and copy-ready CSS.Kaleidoscope MakerTurn a photo or a generated pattern into a kaleidoscope. Set the segment count, rotation, zoom and mirror mode, then download the result.Moiré Pattern GeneratorCreate moiré interference patterns from layered circles, lines or dot grids. Control the frequency, spacing offsets, angles and blend mode.Penrose Tiling GeneratorGenerate a true aperiodic Penrose tiling. Choose the subdivision depth, tile type and colours, then download a PNG or export the SVG.Truchet Tile GeneratorGenerate Truchet tilings from arcs, diagonals or quarter circles. Set the grid size, tile size, colours and seed, with a preview of the base tile.Flow Field Art GeneratorDraw thousands of particles following a noise field to create generative flow-field art. Control the particle count, noise scale, palette and fade.Phyllotaxis Spiral GeneratorGenerate sunflower-seed spirals and similar phyllotaxis patterns. Explore divergence angles around the golden angle and download the result.Lissajous Curve GeneratorDraw Lissajous figures and harmonograph curves. Set the x and y frequencies, phase, amplitude and damping, then export as PNG or SVG.Curved Text GeneratorBend text along a circular arc, a full circle or a wave. Control the radius, span, direction, letter spacing and font, then download a PNG or real textPath SVG.Word Cloud GeneratorPaste text and get a properly laid-out word cloud, with words sized by real frequency and placed without overlap. Choose the shape mask, palette and rotation.Image Inside TextClip any photo to the shape of your typed text. Set the font, size, spacing and background, then download a high-resolution PNG.Typography Poster MakerCompose a poster from type and simple shapes. Pick a layout template, font pairing and colour scheme, and export at A4, A3, square or story size.Certificate MakerDesign an award or completion certificate with decorative SVG borders. Add the recipient, body text, date and signatories, then download or print it.Book Cover MakerDesign a book or e-book cover with your title, subtitle, author and cover image. Choose a layout template and export at 6×9in, 5×8in or e-book size.CD / Album Cover MakerCreate square album art and a matching circular CD label with edge text, centre hole and your own image and colours.Flyer MakerBuild a one-page flyer or event poster with a headline, event details, description and contact block. Several templates, colour schemes and paper sizes.SVG Chart GeneratorPaste CSV data and build a real bar, line, area, pie, donut or scatter chart as inline SVG. Full control over axes, gridlines, labels, colours and legend, with PNG download and copy-ready markup.Heatmap GeneratorTurn a matrix of numbers into a colour-coded heatmap with viridis, magma or custom ramps, percentile clipping, row and column labels and a value legend. Hover any cell for its exact value.Venn Diagram GeneratorBuild 2- and 3-circle Venn diagrams from item lists. The real intersections are computed for you, so every region shows the right items, with area-proportional sizing and PNG download.Treemap GeneratorRender hierarchical data as a squarified treemap you can drill into, with breadcrumbs, grouped colours, wrapping labels and hover details showing each part's share of the total.Radar Chart GeneratorCompare several series across custom axes on a radar chart. Set each axis maximum, toggle fill or stroke, add a legend and read the values from the data table.Bar Chart Race GeneratorPaste entities over time and get an animated bar chart race with smoothly interpolated rankings, rank numbers, a period title and playback scrubbing. Export any frame as PNG.Pie Chart GeneratorTurn labels and values into pie, donut or exploded charts. Control the start angle, hole size, label placement, small-slice grouping and per-slice colours, then download a PNG.Sankey Diagram GeneratorType source, target and value rows to draw a Sankey diagram with flow-proportional ribbons. Hover to trace a full path, drag nodes to rearrange, and export the result as a PNG.Chord Diagram GeneratorVisualise an N×N flow matrix as a chord diagram with grouped arcs and ribbons. Edit the matrix directly, hover to highlight a group's relationships, and download the chart.Isometric Drawing GeneratorDraw isometric art by raising and lowering columns on a grid. Each column is rendered with correct three-face shading and depth sorting, so the result reads as a real 3D shape.Function Plot MakerPlot up to four functions on one graph with proper sampling, asymptote handling, auto or manual ranges, per-curve colours and a trace readout. Download the plot as a PNG.Pixel Art UpscalerPixelate any photo with real block averaging, then choose square, circle or hex pixels, quantise the palette and pixelate just one dragged region. Live preview and PNG download.Image to SVG VectorizerTrace a photo into real SVG paths: colour quantisation, contour tracing and path simplification, with a side-by-side preview plus the path count and file size so you can balance detail against weight.Spectrogram GeneratorLoad an audio file and see its spectrogram, computed with a real windowed FFT. Adjust the FFT size, window, frequency scale and dB range, hover to read frequency and time, and export a PNG.Dot Matrix Image GeneratorConvert an image into a monochrome dot pattern using genuine error-diffusion dithering — Floyd–Steinberg, Atkinson, Burkes, Stucki, Jarvis or ordered Bayer — with control over dot shape and size.Bead Pattern MakerTurn a photo into a fuse-bead pattern using a real bead palette and ID list, with pegboard guides, row and column numbers, a colour legend and exact bead counts for the whole design.Image to Pixel TextConvert an image into coloured pixel text art using an adjustable character ramp. Choose the output width, ramp preset, colour mode and alpha threshold, then copy the text or download a PNG.Style Transfer Effect GeneratorApply classical image stylisations — Kuwahara painting, bilateral smoothing, comic ink outlines, oil painting and pointillism — with a mix slider and a before-and-after comparison.CMYK Halftone SeparatorSeparate an image into cyan, magenta, yellow and black plates at the correct halftone screen angles, then export the composite proof or the individual plates as PNG and SVG.Photo Filter PickerBrowse real photographic filters as live thumbnails on your own photo — vintage, noir, cinematic, cross-process and more — then dial in the intensity and download the full-resolution result.Image SorterBulk-upload images and sort them by name, size, date, dimensions, aspect ratio or dominant colour. Drag to reorder, then export the order as a list, CSV or renamed files in a ZIP.Handwriting Practice Sheet GeneratorGenerate cursive and print practice sheets with proper four-line guides, a model line, a dotted trace line and blank ruled lines to copy. Choose the letter style, line height and rows, then print or download.Cursive Text GeneratorRender text as realistic handwriting on ruled or plain paper, with adjustable slant, baseline jitter, ink colour and letter spacing — plus copyable Unicode script styles.SVG Path AnimatorAnimate any SVG path being drawn, with the path length measured for real. Control the duration, easing, dash pattern and direction, scrub a timeline, and copy the CSS or download a standalone animated SVG.CSS Animation Timeline EditorBuild multi-keyframe CSS animations on a real timeline. Drag keyframes, set transforms, opacity, filters and easing per step, preview with onion-skin ghosting, then copy the @keyframes.Easing Curve ComparatorPlot and compare easing curves — drag cubic-bezier control points, try the named CSS easings and steps(), or simulate a real spring — with a race between up to four curves.CSS Loader GeneratorPick from 20+ real CSS loading animations — rings, dots, bars, ripples, skeletons and more — style the size, colour and speed, then copy the HTML and CSS or export a frame as PNG.Particle System GeneratorDesign a web particle emitter with a live canvas simulation: emission rate, lifetime, gravity, drag, size and colour ramps, blending and spawn shapes, with snow, fire, spark and confetti presets.Graphing CalculatorPlot y=f(x), polar and parametric curves together with wheel zoom, drag pan, auto-fit and a trace tool. Expressions are parsed properly, with implicit multiplication and no eval.Matrix CalculatorAdd, multiply, transpose and invert matrices up to 8×8, compute determinants, ranks and traces, and solve Ax=b — with a grid editor and the elimination steps shown.Unit Circle VisualizerDrag the angle on an interactive unit circle to see sine, cosine, tangent and the reference angle, with exact values at every special angle and an animation that traces the sine and cosine waves.3D Vector CalculatorCompute dot products, cross products, magnitudes, angles and projections with the working shown, and see the vectors in an orbitable 3D view with the parallelogram or box they span.Interactive Analogue ClockDrag the hands on a teaching clock to explore time. Snap to five-minute steps, read the time in words for every minute, switch between 12- and 24-hour faces, and try the random time quiz.Flowchart MakerBuild flowcharts and org charts with drag-and-drop boxes, connectors that route around each other, labels, colours and undo. Export as PNG, SVG or Mermaid source you can paste into a README.Minimal Poster MakerCompose a minimal poster from type, geometric shapes, gradients and a photo layer. Drag, snap and align elements on a canvas, then export at print or social resolutions.Wireframe to HTML ConverterLay out boxes, headings, text blocks, buttons, images and form fields, then generate clean semantic HTML and CSS from the wireframe for a real starting point.Whiteboard / Sketch PadA pressure-aware drawing pad with pen, marker, highlighter, eraser, lines, arrows, rectangles and ellipses, an infinite-ish canvas with pan and zoom, and PNG or SVG export.
Folder Structure GeneratorBuild folder structure diagrams, ASCII directory trees, and file tree visualizations for READMEs and docs..gitignore GeneratorGenerate merged .gitignore rules for your stack with one click.JSON to TypeScript InterfaceConvert JSON into TypeScript interfaces with inferred nested types.Text to Slug ConverterConvert titles and phrases into clean SEO-friendly URL slugs.UTM BuilderBuild campaign URLs with UTM parameters for analytics tracking.JSON Formatter & ValidatorValidate, format, and minify JSON directly in your browser.Regex TesterTest regular expressions with live matches and flag controls.Base64 Encode/DecodeEncode text to Base64 and decode Base64 back to plain text.JWT DecoderDecode JWT headers and payload claims directly in your browser.Markdown Table GeneratorConvert CSV or TSV rows into clean Markdown tables for docs.CSV to JSON ConverterConvert CSV or TSV rows into JSON objects with instant output.JSON to CSV ConverterConvert JSON arrays of objects into CSV rows for spreadsheets.Diff CheckerCompare two texts line by line to spot additions and removals.Case ConverterConvert text into camelCase, snake_case, kebab-case, and more.URL Encoder/DecoderEncode unsafe URL characters and decode percent-encoded strings.UUID GeneratorGenerate random UUID v4 values in bulk with quick copy actions.Hash Generator (SHA)Generate SHA hashes (SHA-1, SHA-256, SHA-384, SHA-512) from text.SQL FormatterFormat and minify SQL queries with keyword casing options.XML FormatterValidate, format, and minify XML with copy-ready output.YAML FormatterValidate, format, and minify YAML with clean indentation.TOML FormatterValidate, format, and minify TOML config text quickly.INI FormatterValidate, format, and minify INI configuration files.CSV FormatterValidate and normalize CSV with delimiter conversion support.CRON Expression ExplainerTranslate 5-field cron schedules into plain-English descriptions.Git Branch Name GeneratorGenerate clean branch names from ticket titles and naming conventions.HTTP Status Code ReferenceSearch HTTP response codes with meanings and common troubleshooting causes.Subnet / CIDR CalculatorCalculate IPv4 network, broadcast, and host ranges from CIDR input.Number Base ConverterConvert between binary, octal, decimal, and hexadecimal in real time.HTML Formatter & MinifierBeautify HTML with proper indentation or minify it to reduce file size.Image to Base64 ConverterUpload any image and get the Base64 data URI for embedding in HTML or CSS.Markdown PreviewWrite Markdown and see the live rendered HTML preview side by side.Text to Binary ConverterConvert text to binary, hex, octal, and decimal — or decode binary back to text.Scientific CalculatorFull scientific calculator with sin, cos, tan, log, ln, sqrt, powers, and calculation history.Caesar Cipher & ROT13Encode or decode text with a Caesar cipher at any shift value, use ROT13, or brute-force all 26 shifts at once.Meta Tag GeneratorGenerate SEO meta tags, Open Graph, and Twitter Card HTML tags for your web page with a live copy-ready preview.JSON to YAML ConverterPaste any valid JSON and instantly get clean, properly indented YAML output. Supports nested objects, arrays, and all types.URL ParserBreak any URL into its components — protocol, hostname, port, pathname, query parameters, and fragment hash. Copy any part instantly.XML to JSON ConverterConvert XML to JSON instantly in your browser. Handles attributes, nested elements, and repeated sibling tags as arrays.Fake Data GeneratorGenerate realistic fake test data — names, emails, usernames, phone numbers, addresses, UUIDs, and more. Export as TSV or JSON.Key Code TesterPress any key to see its JavaScript event properties: key, code, keyCode, which, and modifier states. Instantly debug keyboard events.Markdown to HTMLConvert Markdown to clean HTML instantly. Supports headings, bold, italic, links, code blocks, lists, and blockquotes with a live preview.Text Encryptor / DecryptorEncode and decode text using classic ciphers — Vigenère, ROT13, and Atbash. Runs entirely in your browser with no data sent to a server. Swap input and output in one click.ASCII Table ReferenceComplete ASCII character table (0–127) with decimal, hexadecimal, octal, and binary values. Search by character, name, or code. Click any printable character to copy it.Bitwise CalculatorPerform bitwise AND, OR, XOR, NOT, left shift, and right shift on two numbers. View the 16-bit binary representation for every result. Supports decimal, binary, and hex input.IP Address AnalyzerAnalyze any IPv4 address — view binary representation, IP class, private/public status, subnet mask, and CIDR notation. Perfect for networking and DevOps tasks.Ohm's Law CalculatorCalculate voltage, current, resistance, or power using Ohm's Law. Enter any two known values — the calculator solves for the remaining quantities with full formula reference.CSS MinifierMinify CSS online — remove comments and whitespace to compress your stylesheet. Paste your CSS and get the minified version instantly with file size stats.JavaScript MinifierMinify JavaScript online — remove comments and collapse whitespace to reduce file size. Configurable options including console.log removal. Runs in your browser.HTML to Markdown ConverterConvert HTML to Markdown instantly. Supports headings, links, images, tables, lists, code blocks, blockquotes, bold, and italic. Paste HTML and get clean Markdown output.Robots.txt GeneratorGenerate a valid robots.txt file for your website. Add user-agent rules, disallow and allow paths, and sitemap URL. Quick presets for common configurations.Sitemap XML GeneratorGenerate a valid XML sitemap for your website. Add URLs with priority and change frequency, bulk-import URLs, and download as sitemap.xml instantly.SVG to PNG ConverterConvert SVG to PNG online. Upload an .svg file or paste SVG code, set the output scale, and download a crisp PNG. Runs entirely in your browser.Image Format ConverterConvert images between PNG, JPEG, and WebP in your browser. Upload any image, choose output format and quality, and download the converted file instantly.Tournament Bracket GeneratorCreate single-elimination tournament brackets online. Add teams, generate the bracket, and click to advance winners round by round. Print or screenshot to save.Word Search MakerGenerate custom word search puzzles. Enter your words, choose a grid size (10×10, 15×15, or 20×20), and create a printable word search with horizontal, vertical, and diagonal hidden words.Binary CalculatorAdd, subtract, and multiply binary numbers, or perform AND, OR, XOR bitwise operations. See results in binary, decimal, and hex with step-by-step working.CSS Specificity CalculatorInstantly calculate the specificity of any CSS selector. See the (A,B,C) score, compare two selectors, and understand which CSS rule wins.Open Graph PreviewPreview how your page looks when shared on Twitter/X, Facebook, and LinkedIn. Enter title, description, image URL, and site name to see live social card mockups — no URL fetching needed.JSON Schema GeneratorGenerate a JSON Schema (Draft 7) from any JSON example. Paste your JSON and get a valid schema with inferred types for objects, arrays, strings, numbers, booleans, and nested structures.CSS Media Query GeneratorGenerate responsive CSS media queries with custom breakpoints. Use Tailwind or Bootstrap presets, switch between mobile-first and desktop-first strategies, and copy the CSS output.JSONPath TesterTest JSONPath expressions against JSON data in real time. Query with dot notation, wildcards, array slices, and filter expressions — see matching results highlighted instantly in your browser.Credit Card ValidatorValidate any credit card number using the Luhn algorithm. Instantly detect the card network (Visa, Mastercard, Amex, Discover) and check whether the number passes the checksum. 100% client-side.HTML to Plain Text ConverterStrip HTML tags and convert HTML to clean readable plain text. Options to preserve line breaks, decode HTML entities, and collapse whitespace. Useful for copying web content or cleaning scraped data.HMAC GeneratorGenerate HMAC signatures using SHA-256, SHA-384, or SHA-512 — entirely in your browser.Basic Auth GeneratorGenerate Base64-encoded Basic Authentication headers from a username and password instantly.JSON to XML ConverterConvert JSON objects to well-formatted XML markup instantly in your browser.YAML to JSON ConverterConvert YAML to JSON instantly — paste your YAML and get clean, formatted JSON output.User-Agent ParserParse any user-agent string and extract browser, OS, engine, and device information.MIME Types ReferenceLook up MIME types by file extension or search by content type — a complete reference for developers.Random Port GeneratorGenerate random network port numbers outside the well-known range (1024–65535) for development and testing.ULID GeneratorGenerate Universally Unique Lexicographically Sortable Identifiers (ULIDs) for time-ordered unique IDs.RSA Key Pair GeneratorGenerate RSA public and private key pairs in PEM format directly in your browser using Web Crypto API.YAML to TOMLConvert YAML configuration files to TOML format instantly in your browser.JSON to TOMLConvert JSON objects to TOML configuration format instantly in your browser.TOML to JSONConvert TOML configuration files to JSON format instantly in your browser.TOML to YAMLConvert TOML configuration files to YAML format instantly in your browser.OTP Code GeneratorGenerate and verify TOTP one-time passwords for testing multi-factor authentication flows in your browser.JSON DiffCompare two JSON objects and visually highlight the differences — added, removed, and changed keys.Git CheatsheetQuick reference for the most common Git commands — setup, branching, merging, stashing, and more.JSON MinifyRemove all whitespace from JSON to produce the smallest possible output for APIs and storage.Chmod CalculatorCalculate Unix file permission values — click checkboxes to build chmod values and see the octal and symbolic representations.Docker Run to ComposeConvert docker run commands into docker-compose.yml service definitions instantly.IPv4 Address ConverterConvert an IPv4 address to decimal, binary, hexadecimal, and IPv6 representations instantly.IPv4 Range ExpanderEnter a start and end IPv4 address to get the covering CIDR block, subnet mask, and address count.MAC Address GeneratorGenerate random MAC addresses in various formats with optional OUI prefix for network testing.IPv6 ULA GeneratorGenerate RFC 4193 IPv6 Unique Local Addresses (ULA) for private networks — fc00::/7 range.String ObfuscatorPartially mask a string — like a token, IBAN, or API key — to share it safely without revealing the full value.Benchmark BuilderMeasure and compare the execution time of JavaScript code snippets directly in your browser.Regex CheatsheetA complete JavaScript regex cheatsheet — anchors, character classes, quantifiers, groups, flags, and common patterns.Base64 File ConverterConvert any file to Base64 and decode Base64 strings back to downloadable files — entirely in your browser.EXIF Metadata ViewerUpload a JPEG photo and extract EXIF metadata: camera model, exposure settings, ISO, GPS coordinates, and more — processed entirely in your browser.CSS to Tailwind ConverterConvert CSS properties to Tailwind utility classes instantly. Covers spacing, typography, colors, flexbox, grid, borders, and more — with unsupported properties listed separately.App Icon GeneratorGenerate every iOS, Android, favicon and PWA icon size from one image, with a ready-made manifest and HTML link tags.CSV to Chart GeneratorPaste or upload CSV and get a bar, grouped bar, stacked bar, line, area, pie or scatter chart you can style and download as a PNG.Cubic Bézier EditorDrag the control points to design a cubic-bezier easing curve. Preview the animation live, compare curves side by side, and copy the CSS.JSON Tree ViewerExplore JSON as a collapsible tree with type colouring, node counts, full-text search and copyable paths. Handles large documents without freezing.CSV ViewerView CSV or TSV as a real table. Sort, filter and search, toggle columns, infer column types with basic statistics, and export the filtered result.Regex Explainer & VisualizerBreak a regular expression down token by token into plain English, hover to highlight each part, and test it live with match and capture-group highlighting.Git History Graph GeneratorPaste git log output and render a real commit graph with lanes, merge curves, refs and messages. Export as PNG or SVG.Text Table FormatterTurn delimited data into an aligned plain-text table in Markdown or box-drawing style, with per-column alignment, widths and wrapping.Data URI GeneratorConvert a file to a data URI and back. See the base64 size cost, generate CSS, HTML and JavaScript snippets, and get a warning when it is too big for CSS.Cron Schedule VisualizerSee a cron expression instead of just reading it: a 24-hour timeline, a week view and the next run times, with each field explained in plain English.Visual Regex BuilderBuild a regular expression from structured pieces — literals, classes, quantifiers, groups, anchors and lookarounds — and test it live with every match and capture group highlighted.Visual JSON Schema BuilderBuild a JSON Schema with a tree editor, then validate a pasted JSON instance against it and get clear per-path errors. Import an existing schema to keep editing.HTTP Request BuilderCompose an HTTP request — method, query params, headers, auth and body — and generate copy-ready code for cURL, fetch, axios, Python, Go, PHP and PowerShell. Nothing is sent anywhere.Visual SQL Query BuilderBuild a SELECT statement visually with joins, grouped WHERE conditions, aggregates, grouping, ordering and limits, and get correctly quoted SQL for MySQL, PostgreSQL or SQLite.Database Schema DesignerDesign tables and foreign keys in an editable grid and see the entity-relationship diagram grow. Export PostgreSQL, MySQL or SQLite DDL, a DBML snippet, or a PNG of the diagram.Gradient Code GeneratorBuild linear, radial and conic gradients with a draggable angle dial and stop editor, then copy the CSS, Tailwind arbitrary value, SCSS or SVG version.String Escape / Unescape ToolEscape and unescape strings across JSON, JavaScript, Java, Python, C#, SQL, HTML, XML, URL, regex, CSV and shell dialects, with a lossy-conversion warning when a round trip changes the text.CSS Units ConverterConvert between px, rem, em, %, vw, vh, pt, cm and more using a real reference context, build fluid clamp() values, and see which units are safe for which job.MessagePack & CBOR EncoderEncode JSON to MessagePack or CBOR bytes and decode them back, with an annotated byte-by-byte breakdown. Both formats are implemented in the browser, so nothing is uploaded.Binary File InspectorDrop any file to detect its true type from the magic bytes, read a hex dump with ASCII, chart per-block entropy and extract printable strings. Everything happens locally.
Password Strength CheckerScore your password strength and generate stronger ones.Password GeneratorGenerate strong random passwords with configurable length and character sets.Decision MakerLet the tool randomly pick from your list of options.Yes or No WheelSpin a wheel for a random yes or no answer.Discord Timestamp GeneratorPick a date and time to generate Discord timestamp tags with live preview and one-click copy.Discord Embed BuilderDesign Discord embeds with live preview — copy JSON for bots, webhooks, and Discord.js.My Screen SizeDetect your current screen resolution and aspect ratio.Screen Sizes ReferenceCommon Apple device screen sizes and resolutions.Aspect Ratio CalculatorCalculate reduced aspect ratios and proportional dimensions.String CalculatorAnalyze text statistics: characters, words, lines, paragraphs.Roman Numeral ConverterConvert numbers to Roman numerals and Roman numerals to numbers.Readability Score CalculatorCalculate Flesch, FK Grade, Gunning Fog, and SMOG readability scores.Number to Words ConverterConvert numeric values into English words, including negatives and decimals.Temperature ConverterConvert between Celsius, Fahrenheit, Kelvin, and Rankine instantly.Unit ConverterConvert between metric and imperial units for length, weight, volume, and area.StopwatchOnline stopwatch with lap tracking, split times, and best/worst lap highlighting.Random Number GeneratorGenerate random integers or decimals within any range, with no-duplicate and sort options.Statistics CalculatorCalculate mean, median, mode, standard deviation, variance, and more from a list of numbers.GPA CalculatorCalculate your weighted GPA from courses, letter grades, and credit hours on a 4.0 scale.Coin FlipFlip a virtual coin online for a random heads or tails result. Supports multi-flip mode and tracks your heads/tails statistics.Online TimerFree online countdown timer with hour, minute, and second input, quick presets, and an audio alarm when time is up.Image ResizerResize any image in your browser — set dimensions, choose JPEG, PNG, or WebP format, and download the result. Nothing uploaded.Tally CounterFree online tally counter with multiple named counters. Click to increment, decrement, or reset each counter independently.Noise GeneratorPlay white, pink, or brown noise to help you focus, relax, or fall asleep. Generated in your browser using the Web Audio API.Number Sequence GeneratorGenerate Fibonacci, prime, powers of 2, triangular, square, cube, factorial, arithmetic, and geometric sequences. Copy as a comma-separated list or with custom separators.Times Table GeneratorGenerate the multiplication table for any number from 1 to 20. Choose how far to count, hover rows to highlight them, and copy the full table as plain text.BPM Tap CounterTap in rhythm to calculate beats per minute (BPM).Number FormatterFormat any number in 14 different ways — US/EU/Indian locale, currency, scientific notation, engineering, words, binary, hex, octal, and more.Interactive Periodic TableExplore all 118 elements of the periodic table. Click any element to see atomic number, symbol, name, mass, and category. Search and filter by element type.Fuel Efficiency ConverterConvert fuel efficiency between MPG (US), MPG (UK), L/100km, and km/L. Includes a trip cost calculator — enter distance and fuel price to estimate total fuel spend.Shoe Size ConverterConvert shoe sizes between US, UK, EU, CM, and Japanese sizing for men, women, and kids. Full size charts included — find your equivalent size in any system instantly.Triangle CalculatorSolve any triangle using SSS, SAS, ASA, or AAS. Calculate all missing sides, angles, area, and perimeter with an SVG visualization and triangle type detection.Random Name GeneratorGenerate random full names, first names, or last names. Choose male, female, or any gender across 7 nationalities — English, Spanish, French, German, Japanese, Arabic, and Italian.List RandomizerShuffle any list instantly. Paste items one per line, randomize the order, or pick a single random item. Perfect for random order, name draws, playlist shuffles, or deciding who goes first.Team RandomizerRandomly split a list of names into teams. Paste names one per line, choose 2–10 teams, shuffle, and re-shuffle with colored team cards. Shareable link included.Bingo Card GeneratorGenerate printable bingo cards online. Choose numbers (B-I-N-G-O columns) or custom words, preview cards, and download each as PNG or print all at once.Username GeneratorGenerate unique usernames in gamer, professional, cute, or random styles. Add a keyword, toggle numbers, and get dozens of ideas at once. Shows character limits for major platforms.Quadratic Formula CalculatorSolve quadratic equations (ax² + bx + c = 0) with step-by-step solutions. Get real and complex roots, discriminant, vertex, and parabola direction. Free quadratic equation solver.PPI CalculatorCalculate pixels per inch (pixel density) for any screen. Enter resolution and screen size to get PPI, PPCM, megapixels, and dot pitch. Also converts pixels to inches, cm, and mm.Passphrase GeneratorGenerate strong, memorable passphrases using random words. Customize word count, separators, and capitalization. See entropy and estimated crack time.File Size ConverterConvert file sizes between bytes, KB, MB, GB, TB, and more in both SI (decimal) and IEC (binary) notation. Instantly compare how drive manufacturers vs. operating systems measure storage.Download Time CalculatorCalculate how long it takes to download any file at a given internet speed. Supports Kbps, Mbps, Gbps, and MB/s with quick presets for 3G, 4G, 5G, and broadband.Circle CalculatorEnter any one property of a circle — radius, diameter, area, or circumference — and instantly calculate all the others using standard geometry formulas.Square Footage CalculatorCalculate the total square footage of one or more rooms. Supports rectangular, triangular, and circular shapes. Add multiple rooms and get instant totals in ft² and m².Uptime & SLA CalculatorCalculate the maximum allowed downtime for any uptime SLA percentage. See how much downtime is permitted per year, month, week, and day for 99%, 99.9%, 99.99% and custom SLAs.IBAN Validator & ParserValidate and parse IBAN numbers — check format, verify the checksum, and extract country and BBAN.Wordle SolverStuck on Wordle? Enter your guesses, mark letters as correct, present, or absent, and instantly see all remaining valid words — filter your way to the answer.Online MetronomeFree online metronome with tap tempo, 20–300 BPM, and time signature support, using precise Web Audio timing.Chord Progression GeneratorGenerate and play chord progressions in any key and scale, with popular progressions and Web Audio playback.Passport Photo MakerCrop a photo to passport or ID photo standards, with head-height guides and a printable sheet of copies at 300 DPI.Maze GeneratorGenerate printable mazes with several algorithms, optional braiding for loops, and an animated solution path.Sudoku Generator & SolverGenerate Sudoku puzzles with a guaranteed unique solution across five difficulties. Play them, or reveal the answer.Nonogram Generator & SolverCreate nonogram puzzles from an image or at random, then solve them with real row and column logic.Virtual PianoPlay a piano in your browser with your mouse or keyboard, with chord and scale helpers built in to learn from.EXIF Metadata StripperSee what EXIF data a photo carries, including GPS coordinates, then strip it by re-encoding the image so you can share it safely.Branded QR Code GeneratorCreate a styled QR code with custom shapes, colours, gradients and a centre logo, with a scannability warning when the styling goes too far.Printable Calendar GeneratorGenerate a printable month, year or week calendar with your choice of week start, paper size, week numbers and notes area.Lined & Graph Paper GeneratorGenerate printable ruled, dot grid, square grid, isometric and handwriting-practice paper at your chosen line spacing and paper size.Music Staff Paper GeneratorGenerate blank manuscript paper with correctly spaced five-line staves, your choice of clef, systems per page, paper size and orientation.Comic Book Page TemplateGenerate printable comic panel layouts from ten classic arrangements, with adjustable gutters, margins and borders on a standard comic page.Printable RulerPrint a genuinely accurate ruler in cm/mm or inches. Calibrate your screen first, then choose the subdivisions and print at 100% scale.Printable ProtractorPrint an accurate protractor with 1° markings and 10° labels, in full or half circle form, at your chosen diameter.Name Tag GeneratorTurn a list of names into a printable sheet of name tags, badges or folded place cards, paginated with cut guides.Chore Chart GeneratorBuild a printable chore and reward chart with assignees, a weekly or monthly layout, completion columns and a reward section.Drum MachineA 16-step drum sequencer that synthesises its own kick, snare, hats and claps. Program patterns, set tempo and swing, and save them as JSON.Tone GeneratorGenerate a precise tone from 20Hz to 20kHz. Choose the waveform, add a frequency sweep, and see the note name for the frequency you pick.Instrument TunerTune a guitar, bass, ukulele or violin using your microphone. See the detected note and how many cents sharp or flat you are. Audio never leaves your device.Guitar Chord Diagram MakerDraw printable guitar chord diagrams from a chord library or your own custom shapes, with finger numbers, open and muted strings, and playback.Guitar Fretboard ExplorerExplore scales, chords and intervals across the fretboard in any tuning. Display note names, intervals or degrees, highlight the root, and hear each note.Chord IdentifierIdentify any chord from its notes. Pick notes on a keyboard or fretboard and see the chord name, alternatives and inversions, with playback.Audio TrimmerTrim an audio file by dragging handles on a real waveform. Add fades and export the trimmed clip as a WAV, all in your browser.Voice RecorderRecord from your microphone with a live level meter, then trim the result on a waveform and download it. Nothing is uploaded.Crossword Puzzle MakerBuild a real interlocking crossword from your words and clues, with automatic numbering and across/down clue lists. Print the puzzle and its solution.Boggle Board GeneratorGenerate letter grids for word games and see every valid word hidden in the board, found with a real search and grouped by length and score.Logic Grid Puzzle GeneratorGenerate Einstein-style logic puzzles with clues that provably determine a unique solution, plus an interactive grid to solve them in.Cryptogram Puzzle GeneratorTurn a quote into a substitution cipher puzzle. Solve it in the page with a letter-frequency panel, hints and a check button, or print it.Chess Board EditorSet up any chess position by dragging pieces. Load and copy FEN, mirror the board, and get warned about illegal positions.Sliding Puzzle MakerCreate always-solvable sliding puzzles from numbers or your own image, size 3×3 up to 6×6, and play them with mouse or keyboard.Memory Card Game MakerBuild a memory matching game with text, emoji or your own images, play it in the page, or print a cut-out sheet of cards.Hangman Game & Worksheet MakerPlay hangman in the browser with a word list by category, or generate a printable worksheet of blank games with a word bank.Paint CalculatorWork out how much paint a room needs, subtracting doors and windows. Get litres per coat, cans to buy, and a labelled plan of the walls.Tile CalculatorCalculate tiles and boxes needed for a floor or wall, including grout and waste, with a scaled layout showing full and cut tiles.Wallpaper CalculatorWork out how many rolls of wallpaper you need, correctly accounting for pattern repeat, match type and the drops lost to matching.Concrete CalculatorEstimate concrete volume and bag counts for slabs, footings, columns and stairs, with a dimensioned diagram and optional rebar estimate.Stair CalculatorDesign a staircase with correct riser and tread proportions. Get risers, treads, total run, stringer length and angle, with a scaled cross-section drawing.Roof Pitch CalculatorConvert between pitch ratio, degrees and percentage slope, and calculate rafter length, ridge height and roofing squares from the run.Square Foot Garden PlannerPlan a raised bed on a square-foot grid with correct plant spacing, a sowing calendar and companion-planting warnings. Save layouts in your browser.Seating Chart GeneratorArrange guests into tables automatically while keeping groups together, then drag seats around. Print the chart and export per-table guest lists.Math Worksheet GeneratorGenerate printable maths practice sheets on any topic with correctly computed answers and a separate answer key. Choose the range, format and question count.Fraction VisualizerSee fractions as pie slices, bars and number lines, do fraction arithmetic with the working shown step by step, and print practice worksheets.3D Shape Net GeneratorGenerate accurate printable nets for cubes, pyramids, prisms, cylinders, cones and more, with fold lines, glue tabs and dimensions labelled.Handwriting Worksheet MakerCreate tracing and copy practice sheets with proper four-line guides, dotted text to trace and blank lines to write on. Print or download.Spelling Worksheet MakerBuild spelling practice sheets from your word list: write three times, alphabetical order, missing letters, unscramble, sentences and a word search.Number Line GeneratorGenerate printable number lines with your choice of range, step, negatives, decimals or fractions, labelled or left blank for students to fill in.Clock Face Worksheet MakerGenerate printable analogue clock faces for teaching time, with optional blank faces and times randomised at your chosen granularity.Printable Tangram GeneratorPrint mathematically accurate tangram pieces with optional puzzle silhouettes to solve, and a cut-out sheet of the seven tans.Online Step CounterCount your steps from your phone's motion sensor with a real peak-detection algorithm, plus cadence, distance, calories and a live activity graph. Nothing leaves your device.Dice Probability SimulatorRoll dice notation thousands of times and compare the simulated distribution against the exact theoretical one, with mean, standard deviation and per-total probabilities.Coin Flip & Streak TrackerFlip coins with real randomness, track heads, tails, current and longest streaks, chart the convergence towards 50% and test the fairness with a chi-square statistic.Card Shuffle SimulatorCompare Fisher-Yates, riffle, overhand and no-shuffle with Monte Carlo experiments that show how quickly each one randomises a deck, using rising sequences and a position heatmap.Colour Format ConverterConvert a colour between HEX, RGB, HSL, HWB, CMYK, LAB, LCH, OKLCH, XYZ and named colours at once, with a wide-gamut warning and copy-ready snippets for CSS, Swift, Android and Flutter.Random Data Table GeneratorGenerate realistic fake records — names, emails, addresses, dates, prices, IBANs and Luhn-valid card numbers — then export as CSV, JSON, SQL inserts or Markdown from a reproducible seed.Placeholder Image Generator ProGenerate placeholder images locally on canvas — solid, gradient, numbered, geometric or avatar styles — at any size or as a batch, and download them individually or as a ZIP.Text Hash GeneratorHash text or a file with MD5, SHA-1, SHA-256/384/512, SHA-3 and CRC-32 at once, in hex, base64 and base64url, and verify a hash against the input.Countdown Event TimerTrack countdowns to several named events at once, with days, hours, minutes and seconds, an alarm at zero, a big-screen mode and a calendar file you can download.File Checksum VerifierCompute MD5, SHA-1, SHA-256, SHA-512 and CRC-32 for dropped files and verify them against a pasted checksum list, with a clear pass or fail per file. Files are never uploaded.Kanban BoardA drag-and-drop kanban board with columns, cards, labels, due dates, checklists, WIP limits and filters. Your board is saved in your browser and can be exported as JSON or Markdown.Time Block PlannerPlan your day on a timeline: drag to create, move and resize blocks, colour-code them by category, and see totals per category plus the free time you have left.Weekly Schedule BuilderBuild a repeating weekly timetable with conflict detection, per-day totals, a live current-activity indicator, and print, CSV or .ics calendar export.Reading List ManagerTrack books and articles with status, progress, ratings and tags. See reading stats, a monthly chart and an estimated finish date based on your own reading pace.Goal & Habit Progress TrackerSet measurable goals with a deadline, log progress over time and see whether you are ahead of the required pace, with a projected completion date and a progress chart.Favicon Preview CheckerSee how an image really looks as a favicon in a browser tab, bookmark bar, iOS home screen and Google result, then download the full icon set with the HTML and manifest.Screen Breakpoint SimulatorCheck any layout against real device widths and pixel ratios, see which CSS breakpoints a width falls into, and copy a ready-made media query.Device Pixel Ratio & Screen InfoSee the real display details of your device — pixel ratio, screen and viewport sizes, colour depth and media preferences — plus which modern image formats your browser supports.Keyboard Layout & Key TesterPress any key and see it light up on a real keyboard layout, with the key code, location, modifier state, rollover count and your typing latency. Great for debugging shortcuts.Mouse & Pointer TestCheck your mouse for double-click faults, polling rate, pointer drift, acceleration and button mapping, and test the scroll wheel and every button on a live pad.Webcam Test & Photo BoothCheck your camera and microphone work, see the resolution and frame rate, and take a self-timer snapshot you can download. The stream stays on your device and stops when you leave.QR Code & Barcode ScannerScan QR codes and common barcodes from your camera or from an uploaded image, with the decoded content shown and copyable. Uses your browser's built-in detector, so nothing is uploaded.Air Fryer & Oven ConverterConvert cooking times and temperatures between a conventional oven, a fan oven, an air fryer and a microwave, with gas mark equivalents, food timings and safe internal temperatures.Bread Dough Hydration CalculatorScale a bread recipe in baker's percentages, accounting for the water in your starter, and get every ingredient weight, the true hydration and the water temperature for your target dough temperature.Habit Grid TrackerTrack several habits across a whole year as a colour-intensity grid, with click-to-cycle levels, current and longest streaks, completion rates and a printable view.Screen & Pixel Density TesterMeasure your display's real refresh rate and pixel density, then check it with pixel-grid, gradient-banding, colour and text-rendering test patterns you can read results from.
Tip Calculator & Bill SplitterCalculate tip and split total bill per person with instant totals.Percentage CalculatorSolve percent-of, what-percent, and percentage-change calculations.VAT/Tax CalculatorAdd or remove VAT/tax from amounts with a configurable rate.Fuel/Road Trip Cost CalculatorEstimate fuel needed and trip cost from distance, efficiency, and fuel price.Mortgage CalculatorEstimate monthly payment, total paid, and total interest for a home loan.Loan & EMI CalculatorCalculate monthly EMI, total interest, and full amortization schedule for any loan.Compound Interest CalculatorSee how investments grow with compound interest — with year-by-year breakdown.Fraction CalculatorAdd, subtract, multiply, or divide fractions with simplified results, mixed numbers, and steps.Savings Goal CalculatorCalculate how much to save per month to reach your goal — or how long it takes with a fixed monthly amount. Includes interest.Budget CalculatorTrack your monthly income and expenses. See your net savings, savings rate, and a visual income vs. expenses breakdown.Retirement CalculatorPlan your retirement. See your projected nest egg, monthly income from savings, and a year-by-year growth breakdown.Loan Payoff CalculatorSee how much sooner you can pay off your loan with extra monthly payments. Compare standard vs. accelerated payoff, total interest saved, and a month-by-month amortization table.Invoice GeneratorCreate and print professional invoices instantly in your browser. Add line items, tax rate, and client details — no sign-up required, nothing uploaded to any server.Net Worth CalculatorCalculate your net worth by listing your assets and liabilities. See total assets, total liabilities, and net worth with a visual breakdown. Runs entirely in your browser.Break-Even CalculatorFind how many units you need to sell to cover all costs. Enter fixed costs, variable cost per unit, and selling price to calculate your break-even point and contribution margin.Expense SplitterTrack shared expenses and see who owes whom. Add people, enter who paid each expense, and get the minimum number of transfers to settle up.Unit Price ComparisonCompare products by price per unit to find the best value. Enter price and quantity for each option to instantly see which size or brand gives you the most for your money.Salary CalculatorConvert any salary between hourly, daily, weekly, monthly, and annual rates. Configure hours per day, days per week, and see your net salary after tax.ROI CalculatorCalculate return on investment, annual CAGR, net profit, and payback period. Enter your initial investment and total return value to see your performance at a glance.Box 3 berekenenBereken je Nederlandse box 3-belasting voor 2025 & 2026 (forfaitair) en het voorgenomen stelsel 2028 (werkelijk rendement).Discount CalculatorCalculate the sale price, discount amount, and savings for any percentage off. Supports reverse mode to find the original price from a sale price and discount percentage.Electricity Cost CalculatorFind out how much any appliance costs to run per day, week, month, and year. Enter wattage, daily usage hours, and your electricity rate to get accurate running cost estimates.Inflation CalculatorFind the equivalent purchasing power of money across any years from 1913 to 2024 using historical US CPI data. Calculate how prices have changed over time.FIRE CalculatorFind out when you can reach Financial Independence and Retire Early. Calculate your FIRE number, years to retirement, and the savings rate you need.Rent vs Buy CalculatorCompare renting and buying over any horizon with a year-by-year table, a net-worth chart and the break-even year, including all the costs people forget.Debt Payoff PlannerCompare the snowball and avalanche debt strategies side by side. See the month-by-month payoff schedule, total interest and your debt-free date for each.Mortgage Comparison ToolCompare up to four mortgages side by side. Monthly breakdowns, total interest and cost, amortization tables, and a break-even analysis when points are involved.Investment Fee CalculatorSee what fund fees really cost over time. Chart your portfolio with and without fees, and compare typical fee levels from 0.03% to 2%.Stock Profit CalculatorWork out the profit or loss on a share trade including commission, with multi-lot average cost, break-even price and a profit-versus-price chart.Crypto Profit CalculatorCalculate profit or loss on a crypto position including exchange fees, with a DCA mode and a what-if table showing profit at future prices.Dividend CalculatorProject dividend income over time, with and without reinvestment. See annual income per year and how dividend growth compounds.Loan Comparison CalculatorCompare several loans by monthly payment, total interest and effective APR including fees, and see what an extra monthly payment saves you.Savings Challenge PlannerPlan a 52-week, reverse, micro-saving or custom savings challenge and see the full period-by-period schedule with interest, a progress chart and a printable tick-off grid.Compound Interest VisualizerExplore compound growth in depth: regular contributions, any compounding frequency, contribution increases and inflation-adjusted real values, charted as principal, contributions and interest.Food Cost & Portion CalculatorWork out what a recipe really costs from pack prices and pack sizes, including waste, then see the cost per portion, a suggested menu price at your target food cost and the margin.Ingredient Comparison ChartCompare ingredients head to head on cost per 100 g, per serving, per 100 kcal and per 10 g of protein, with reference nutrition and impact figures ranked in a sortable chart.Weekly Meal PlannerPlan a week of meals on a grid with your own meal library, estimate daily and weekly nutrition, and generate a consolidated shopping list grouped by aisle. Print the plan or the list.Sleep Cycle PlannerFind the best bedtime or wake time around real 90-minute sleep cycles, see every option with a quality rating on a 24-hour timeline, and estimate the sleep debt against your target.Body Measurement TrackerLog weight and body measurements over time, chart each one with a trendline, and derive waist-to-height, waist-to-hip and body-fat estimates. Your data stays in your browser.Running Training Plan GeneratorGenerate a real periodised plan for a 5K, 10K, half or marathon with easy runs, intervals, tempo work, long runs, cutback weeks and a taper — at paces derived from your goal time.Daily Hydration TrackerSet a hydration goal from your weight, activity and climate, log drinks through the day with a filling-glass visual, and review your last seven days.Calorie Burn Comparison ChartCompare calories burned across 60+ activities using real MET values, charted for your weight and duration, with the formula shown and the time needed to burn a target.Pediatric Dose CalculatorCalculate weight-based paediatric doses with the working shown, including maximum-dose warnings, volume from a chosen concentration and maintenance fluids. An educational reference only — always follow local protocols.
Meeting Cost CalculatorEstimate meeting cost by attendees, hourly rates, and duration.Pomodoro TimerRun focused work sessions with break intervals and session tracking.Typing Speed TestMeasure your words per minute (WPM) and typing accuracy with five passages. Track errors and improve your speed.Flashcard MakerCreate question-and-answer flashcards and study them in your browser. Flip cards with an animation, shuffle your deck, and mark cards as known to track progress.Habit TrackerTrack your daily habits across the week. Check off each day you complete a habit, monitor your streak, and build consistency. Progress is saved in your browser.Grade CalculatorCalculate your weighted course grade or find out what score you need on the final exam to hit your target. Supports any number of assignments with custom weights.Email Signature GeneratorCreate a professional HTML email signature — add name, title, company, phone, website, and social links. Choose a style, preview it, and copy the HTML for Gmail, Outlook, or Apple Mail.Hashtag GeneratorGenerate relevant hashtags for Instagram, TikTok, Twitter/X, and LinkedIn. Enter your topic and category, pick how many, then copy them all. Platform limits respected.Online NotepadFree online notepad that auto-saves in your browser. No account needed — start typing immediately. Supports multiple notes, word count, and one-click copy or download as .txt.Random Quote GeneratorGet inspired with a random quote from Einstein, Churchill, Twain, Maya Angelou, and more. Filter by category — motivational, wisdom, humor, science. Copy or save favorites.Love CalculatorEnter two names and find out your love compatibility percentage. A fun way to check if you're meant to be — shareable results included!Numerology CalculatorFind your Life Path Number, Expression Number, Soul Urge, and Personality Number. Enter your name and birthdate for a complete numerology reading.Mind Map GeneratorTurn an indented outline into a properly laid-out mind map. Style the nodes and connectors, then export as PNG or SVG.Gantt Chart GeneratorBuild a project Gantt chart with tasks, dates, dependencies, progress and milestones. Import tasks from CSV or export the chart.
Cooking Unit ConverterConvert cups, spoons, ml, grams, and ounces with ingredient-specific density.Recipe Scaling CalculatorScale any recipe up or down by changing the number of servings. All ingredient amounts adjust proportionally. Supports cups, grams, ml, oz, and more.Baking Substitutions GuideFind substitutes for 35+ baking ingredients — eggs, butter, flour, sugar, dairy, and more. Exact ratios, instructions, and best-use tips included.Pizza Portion & Pan CalculatorWork out how many pizzas to make from the number of guests or the pan size, with real area maths, dough weight per base and a scaled shopping list.Pizza Dough CalculatorScale pizza dough by the number of pizzas, ball weight and style — Neapolitan, New York, Detroit and more — with correct pre-ferment mathematics and a fermentation schedule.Recipe Converter & FormatterPaste a recipe and convert it properly: scale the servings, parse the ingredient lines, convert cups and ounces to grams using real ingredient densities, and format kitchen fractions.Sourdough Starter CalculatorWork out exact starter feedings from your hydration and jar size, build a levain for a recipe, and plan a feeding schedule from the room temperature and your logged rise times.
BMI CalculatorCalculate your Body Mass Index using metric or imperial units with category breakdown.Sleep CalculatorFind the best bedtime or wake-up time based on 90-minute sleep cycles. Wake up refreshed with this free sleep cycle calculator.TDEE CalculatorCalculate your Total Daily Energy Expenditure using the Mifflin-St Jeor formula. Find calorie targets for weight loss, maintenance, or muscle gain.Ideal Weight CalculatorCalculate your ideal body weight using four clinical formulas: Devine, Robinson, Miller, and Hamwi. Supports metric and imperial units.Heart Rate Zone CalculatorFind your 5 heart rate training zones based on age or max heart rate. Includes the Karvonen formula with fat burn, aerobic, and VO₂ max zones.Body Fat CalculatorEstimate body fat percentage using the US Navy circumference method. Enter height, neck, waist, and hip measurements to see your body fat category. Metric and imperial supported.Weight Loss CalculatorCalculate how long it will take to reach your weight loss goal. Choose your pace, see the required daily calorie deficit, and get a month-by-month weight milestone breakdown.Running Pace CalculatorConvert running pace and speed with race finish time estimates.Calorie Burn CalculatorEstimate calories burned using activity MET, body weight, and workout duration.Daily Water Intake CalculatorEstimate daily hydration target in ml and liters using weight, activity, and climate.Breathing Exercise TimerFollow guided breathing exercises to reduce stress, improve focus, or fall asleep. Choose Box Breathing, 4-7-8, Calm Breathing, or Energizing Breath with an animated visual guide.Macro CalculatorCalculate daily protein, carbohydrate, and fat targets based on your TDEE and goal. Enter your stats and choose to lose weight, maintain, or build muscle — get gram and calorie breakdowns.Weight TrackerLog your weight over time, visualize progress with a line chart, track BMI, and set a goal weight — all stored privately in your browser using localStorage.One Rep Max CalculatorEstimate your one rep max from any weight and rep count using six recognised formulas, with a full percentage table and a warm-up set generator.VO2 Max CalculatorEstimate VO2 max from the Cooper test, the 1.5-mile run, resting heart rate or the Rockport walk, and compare it against age and sex norms.Lean Body Mass CalculatorCalculate lean body mass and fat mass with four clinical formulas, shown as a body-composition breakdown against the ideal range.Swim Pace CalculatorConvert between swim time, distance and pace per 100m or 100yd, with per-50 split tables and predicted finish times for common race distances.Cycle & Fertility CalendarPredict your next periods, fertile window and ovulation day, shown on a colour-coded calendar. Log real period dates to refine the predictions. Stored only in your browser.Eye Test ChartDisplay a correctly scaled Snellen or Tumbling E eye chart. Calibrate your screen, work through the lines, and get an approximate visual acuity reading.Child Growth Percentile ChartPlot a child's height and weight against reference percentile curves, track measurements over time, and see which percentile they fall on.Blood Alcohol EstimatorEstimate blood alcohol content with the Widmark formula and its refinements, with a drink database, a decay curve and the time to sober. An estimate only — never use it to decide whether to drive.