Finance & Everyday Math
43 free tools — all run in your browser, no account needed.
Tip Calculator & Bill SplitterCalculate tip and split total bill per person with instant totals.Use tool →Percentage CalculatorSolve percent-of, what-percent, and percentage-change calculations.Use tool →VAT/Tax CalculatorAdd or remove VAT/tax from amounts with a configurable rate.Use tool →Fuel/Road Trip Cost CalculatorEstimate fuel needed and trip cost from distance, efficiency, and fuel price.Use tool →Mortgage CalculatorEstimate monthly payment, total paid, and total interest for a home loan.Use tool →Loan & EMI CalculatorCalculate monthly EMI, total interest, and full amortization schedule for any loan.Use tool →Compound Interest CalculatorSee how investments grow with compound interest — with year-by-year breakdown.Use tool →Fraction CalculatorAdd, subtract, multiply, or divide fractions with simplified results, mixed numbers, and steps.Use tool →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.Use tool →Budget CalculatorTrack your monthly income and expenses. See your net savings, savings rate, and a visual income vs. expenses breakdown.Use tool →Retirement CalculatorPlan your retirement. See your projected nest egg, monthly income from savings, and a year-by-year growth breakdown.Use tool →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.Use tool →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.Use tool →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.Use tool →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.Use tool →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.Use tool →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.Use tool →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.Use tool →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.Use tool →Box 3 berekenenBereken je Nederlandse box 3-belasting voor 2025 & 2026 (forfaitair) en het voorgenomen stelsel 2028 (werkelijk rendement).Use tool →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.Use tool →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.Use tool →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.Use tool →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.Use tool →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.Use tool →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.Use tool →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.Use tool →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%.Use tool →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.Use tool →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.Use tool →Dividend CalculatorProject dividend income over time, with and without reinvestment. See annual income per year and how dividend growth compounds.Use tool →Loan Comparison CalculatorCompare several loans by monthly payment, total interest and effective APR including fees, and see what an extra monthly payment saves you.Use tool →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.Use tool →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.Use tool →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.Use tool →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.Use tool →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.Use tool →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.Use tool →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.Use tool →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.Use tool →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.Use tool →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.Use tool →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.Use tool →