Free tools / Chords in every key

Chords in every key

Pick any key and see its seven chords — each a tap-to-hear diagram — plus the progressions built from them that you can play and transpose. Free.

Learn which chords belong together and songwriting stops being guesswork. Each page below shows a key's seven diatonic chords with their Roman numerals and jobs, then lets you play and transpose the progressions they build — all generated by our own engine, all free.

Major keys

C major D♭ major D major E♭ major E major F major F♯ major G major A♭ major A major B♭ major B major

Minor keys

A minor B♭ minor B minor C minor C♯ minor D minor E♭ minor E minor F minor F♯ minor G minor G♯ minor

Learn it once, use it everywhere

The magic of thinking in numbers: the chord pattern is the same in all twelve keys. Learn that I–IV–V (or i–iv–v) works the same everywhere and you can play in any key — the fretboard tool shows you exactly where the shapes land. Curious about the scales underneath? Browse every scale in every key.

// There's more

Every key, chord and scale lights up across the whole neck in the free interactive tool — hear it, build progressions, and jam over them.

Open the fretboard tool

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