Chord Progression Generator
Generate and play chord progressions in any key and scale. Explore popular patterns or randomize your own.
Scale notes — C Major
Preset Progressions
Diatonic Chords — C Major
Click a chord to append it to your progression.
About This Tool
The Chord Progression Generator builds diatonic chords from any root key and scale using pure music theory. Each scale degree has a naturally occurring chord quality — major, minor, or diminished — based on the intervals of the scale.
Playback uses the Web Audio API with stacked sine wave oscillators (one per chord tone) slightly detuned against each other for warmth, mimicking the harmonic richness of real instruments.
Color coding: Blue cards = major chords, teal cards = minor chords, orange cards = diminished chords.
All processing happens entirely in your browser. No data is sent to any server.
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is Chord Progression Generator really free?
Yes. Chord Progression Generator is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does Chord Progression Generator upload my data?
No. Chord Progression Generator runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and Chord Progression Generator is ready to use on desktop or mobile.
Does Chord Progression Generator work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
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