Interactive circle of fifths
The circle of fifths puts the twelve major keys in order: each step clockwise is a fifth higher and adds one sharp to the key signature (or takes away one flat). Each major key's relative minor, which shares its key signature, sits inside.
Tap a key to see its sharps or flats in order, the notes of the scale and its main chords.
Free, no sign-up, works on phones. Nothing you play is recorded.
Circle of fifths
Going clockwise, each key is a fifth higher and has one more sharp (or one fewer flat). Inside each major key is its relative minor, which shares the same key signature. Choose a key.
C major and its relative minor, A minor
Key signature: No sharps or flats.
Scale: C D E F G A B
Main chords: I = C, IV = F, V = G; the relative minor chord vi = Am.
How to use it
- Tap or use the keyboard (Tab, then Enter) to choose a key.
- Read the key signature, the scale and the primary chords I, IV and V.
- Press Hear to listen to the scale.
Learn more: Scales and keys explained
More free tools
- Scale playerHear major, natural, harmonic and melodic minor, pentatonic and chromatic scales from any note, with correctly spelled note names. Free, in your browser.
- Chord progression playerLoop common chord progressions in any of eight keys at your own speed to strum or play along: I V vi IV, I IV V, ii V I, 12-bar blues and more.
- Chord transposer and capo helperMove a chord progression up or down any number of semitones, or see what chord shapes sound like with a capo. Handles slash chords like D/F#.
Every tool is also in the Quick tools button in the corner of each page.
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