Chord Explorer

A free browser playground for chords and scales — for guitarists, pianists, and anyone learning how harmony fits together. No sign-up; install it and it works offline. Pick a root and quality (or scale), then play the chord or arpeggio. Click piano keys to hear individual notes.

How to use Chord Explorer

1. Pick a root note (C, C#, D…) from the Root menu.
2. Choose a chord quality (major, minor, 7th…) or a scale.
3. Click Play to hear the chord, or step through it as an arpeggio.
4. Tap individual piano keys to hear single notes.

Frequently asked questions

Which chord qualities are supported?

Major, minor, dominant 7, major 7, minor 7, diminished, augmented, sus2, sus4, and common extensions.

Does it show intervals?

Not as numbers. The chord or scale’s notes light up on the keyboard and are spelled out in order beside the chord symbol, so you can count the steps between them.

Can I export or share a chord?

Not yet — Chord Explorer is intentionally tiny. Use it for ear-and-finger memory, then transfer to your instrument.