⭕ Circle of Fifths Calculator

Explore key relationships, chord progressions, and key signatures

Select a key to explore

🎼 Key Signature

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🎵 Scale Notes

🔗 Related Keys

Relative
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Same notes, different tonic
Parallel
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Same tonic, different mode
Dominant
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Up a perfect fifth
Subdominant
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Down a perfect fifth

🎸 Common Chord Progressions

Diatonic Chords

Roman numerals show chord functions

Popular Progressions

⭕ Circle of Fifths Position

💡 Circle of Fifths Facts:
• Moving clockwise adds sharps (or removes flats)
• Moving counter-clockwise adds flats (or removes sharps)
• Adjacent keys differ by one accidental
• Opposite keys are tritones apart (6 semitones)