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Circle of fifths
An interactive circle of fifths with key signatures, related keys and chords you can play.
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- Works on any device
About Circle of fifths
The circle of fifths arranges the twelve keys so each step clockwise adds one sharp, and each step anticlockwise adds one flat. Click a key to see its signature, relative minor, neighbouring keys and the diatonic chords. It is a quick reference when writing or transposing songs.
How to use Circle of fifths
- Click a key on the circle.
- Read its key signature, related keys and the chords in that key.
- Switch between major and minor to compare.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Available in 10 languages.
Also known as
Frequently asked questions
How do I find the relative minor of a key?
It is the sixth note of the major scale, three semitones below the major tonic. C major's relative minor is A minor, and both share the same key signature.
What does moving clockwise around the circle mean?
Each step clockwise goes up a perfect fifth and adds one sharp to the key signature. Counter-clockwise goes down a fifth and adds one flat.
How can the circle help me modulate to another key?
Keys next to each other on the circle share most of their notes, so they sound smooth together. Moving to a neighbouring key is the easiest change to make.
Is Circle of fifths free?
Yes. Circle of fifths on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.