Interactive circle of fifths
Explore all 12 major keys, their relative minors and key signatures.
If HertzKit was useful to you, you can buy us a coffee. It's never required to use any tool.
Buy us a coffeeHow to use the circle of fifths
- Click any segment to see its major key, relative minor and key signature.
- Press “Play tonic” to hear the fundamental note of the selected key.
- The circle moves in perfect fifths — each segment to the right adds one sharp to the signature.