๐ธ Capo Calculator
Calculate the actual sounding key from the guitar chord shape you're playing and your capo's fret position. Or work the other way โ from the key you want to play in and the chord shape you'd rather use, find the capo position you need.
How to use
- Choose a calculation mode: "find the sounding key from shape + capo position" or "find the required capo position from shape + target key".
- Choose the chord shape (key) you want to play.
- Depending on the mode, choose the capo position or the target key.
- The result is calculated automatically.
How the calculation works
This tool works out how the chord shape you play and the capo position relate to the key that actually sounds on a guitar. Sounding key = chord shape + capo fret (each fret is one semitone) Capo position needed = target key โ chord shape With a capo at fret 2 and a C shape, the guitar sounds two semitones higher, in D. Use it to play in the original key with familiar shapes such as C, G or D.
Worked example
G shape + capo 2 โ sounds in A C shape + capo 3 โ sounds in Eโญ A song in D played with C shapes โ capo 2 A song in Eโญ played with G shapes โ capo 8 (or D shapes with capo 1)
Things to be aware of
- A very high capo makes the sound thin and the neck cramped. If the answer is above fret 5, try other shapes.
- G, C and D shapes are popular for singing along because their open strings ring well.
- The Transpose tool can rewrite the chord chart itself in another key.
FAQ
What does "chord shape" mean here?
It refers to which open-position chord form (like C or G) you finger while the capo is on. The actual sound is that shape transposed up by the capo's fret position.
Can this tell me when no capo is needed?
Yes โ a result of 0 for the required capo position means you can play it open, with no capo.
Does this account for the difference between semitones and whole tones?
Yes โ since each capo fret raises the key by exactly one semitone, this is calculated precisely using the 12-tone chromatic scale.