Free tool

Interactive circle of fifths

The circle of fifths arranges the twelve keys so that each step clockwise adds one sharp and each step anticlockwise adds one flat. Click any key on the circle below to see its key signature, its scale drawn on a keyboard, and the chords that belong to it. It is the single most useful diagram in music theory.

C major

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Questions

Common questions

What is the circle of fifths for?

It shows how keys relate to one another. Neighbouring keys share almost all their notes, which is why music moves between them so easily.

How do I read it?

Start at C at the top, which has no sharps or flats. Each step clockwise adds a sharp, each step anticlockwise adds a flat.

What is a relative minor?

The minor key that shares a key signature with a major key. A minor is the relative minor of C major, and both use only white keys.