Circle of Fifths
The twelve major keys arranged by interval relationship — each key's neighbors are a perfect fourth and fifth away. Select a key to see its diatonic chords and related keys.
C Major
Major key — select another to explore
Seven Diatonic Chords
I Cii Dmiii EmIV FV Gvi Amviiø Bdim
The circle shows the major keys on the outer ring and their relative minors on the inner ring. Neighboring keys are related by interval: the key to the right is a perfect fifth higher, and the key to the left is a perfect fourth higher.