Interactive Circle of Fifths
Click any key to see scale notes, key signature, relative keys, and Camelot code. Outer ring = major keys, inner ring = relative minor keys.
Quick Use Cases
What is the Circle of Fifths?
How It Works
The Circle of Fifths arranges all 12 major keys (and their relative minors) in a circle. Each step clockwise adds one sharp to the key signature. Each step counter-clockwise adds one flat. At the top is C major (no sharps or flats). At the bottom, F# major (6 sharps) and Gb major (6 flats) meet, sharing the same notes under different names.
Why Adjacent Keys Sound Good Together
Adjacent keys on the circle differ by only one note. G major and D major share 6 of 7 scale notes. This note overlap creates harmonic continuity, which is why modulating to an adjacent key sounds smooth while jumping across the circle sounds jarring. The same principle explains why chord progressions that "borrow" from nearby keys feel natural.
Relative Keys Explained
Every major key has a relative minor that uses the exact same notes. C major and A minor share all 7 notes (C, D, E, F, G, A, B). They appear at the same position on the circle, just in different rings. The difference is the tonal center: C major resolves to C, while A minor resolves to A. This is why songs can shift between a major and its relative minor without any chord changes feeling out of place.
Circle of Fifths vs Camelot Wheel
The Camelot Wheel is the Circle of Fifths with DJ-friendly codes. Where the Circle uses traditional key names (C major, A minor), the Camelot Wheel uses numbers and letters (8B, 8A). Both systems place harmonically compatible keys next to each other. Use the Circle of Fifths for songwriting and music theory. Use the Camelot Wheel for quick DJ set planning without needing to know key names.
Key Signatures Reference
| Major Key | Relative Minor | Sharps/Flats | Camelot |
|---|---|---|---|
| C major | A min | No sharps or flats | 8B |
| G major | E min | 1 sharp | 9B |
| D major | B min | 2 sharps | 10B |
| A major | F# min | 3 sharps | 11B |
| E major | C# min | 4 sharps | 12B |
| B major | G# min | 5 sharps | 1B |
| F# major | D# min | 6 sharps | 2B |
| Db major | Bb min | 5 flats | 3B |
| Ab major | F min | 4 flats | 4B |
| Eb major | C min | 3 flats | 5B |
| Bb major | F min | 2 flats | 6B |
| F major | D min | 1 flat | 7B |
How to Use the Circle of Fifths
For Songwriters
- Find your key on the outer ring
- The 3 adjacent keys share most of your notes
- Borrow a chord from an adjacent key for color
- The inner ring shows your relative minor for emotional contrast
For Producers
- Detect your sample's key with BeatKey
- Find it on the circle to see all scale notes
- Layer elements that share the same key
- Check the Camelot code for DJ compatibility
For DJs
- Use BeatKey to tag tracks with key + Camelot
- Adjacent positions = harmonically safe mix
- See the Camelot codes in the info panel
- Or use the Camelot Wheel for DJ-first view
Frequently Asked Questions
How many keys are in the Circle of Fifths?
12 major keys in the outer ring and 12 relative minor keys in the inner ring, for 24 total key positions. All 12 major keys and all 12 natural minor keys are represented. Some keys appear twice under different names (enharmonic equivalents), like F# major and Gb major, which share the same 6-flat/6-sharp position.
What does "perfect fifth" mean?
A perfect fifth is the interval between two notes 7 semitones apart. From C, a perfect fifth up is G. From G, a perfect fifth up is D. Going clockwise around the circle, each key is a perfect fifth above the previous one. Fifths are one of the most stable, pleasing intervals in music, which is why keys built a fifth apart sound harmonically related.
How do I memorize the Circle of Fifths?
Use the phrase "Father Charles Goes Down And Ends Battle" for the clockwise sharp keys (F C G D A E B) and its reverse "Battle Ends And Down Goes Charles Father" for the flat keys. Or just bookmark this interactive tool and click your key when you need to look it up. Most working producers and DJs use a reference rather than memorizing all 24 positions.
Can the Circle of Fifths help with chord progressions?
Yes. The most common chord in any key (the V chord, or dominant) is always the key one step clockwise. In C major, G major is the V chord. In G major, D major is the V chord. This is why V to I progressions (like G to C) are so common: they follow the circle. The ii-V-I jazz progression also follows the circle: two steps counter-clockwise to I.