Capo Chart Calculator
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What Your Result Means
- Chord shapes: Each box shows the chord shape name you physically play on the fretboard. With the capo clamped, the open strings are raised by the capo's fret number in semitones, so the shapes sound in a different key than their name suggests.
- Fret notation: The bracketed numbers (e.g., [X32010]) show which frets to hold on each string, from low E to high E. X means don't play that string, 0 means open.
- Transposition direction: A capo raises pitch. If you want to play in G but only know open C shapes, place the capo on fret 7 — the C shapes will now sound as G.
How This Calculator Works
You choose an original key and a capo fret position. Each fret raises pitch by one semitone (half step). The tool subtracts the capo's semitone offset from each chord's root note to find the chord shape you need to play. It uses the standard 12-note chromatic scale (C, C#, D, ... B) and transposes common open-position chords — C, Dm, E, Em, F, G, A, and Am.
Quick Questions
Why use a capo instead of barre chords?
A capo lets you play open-position chord shapes in any key, which often sound fuller and ring out more naturally than barre chords. It is especially popular in folk, country, and singer-songwriter styles where open strings are part of the sound.
Does a capo change the tuning of my guitar?
Not the tuning of the individual strings relative to each other — it raises all strings by the same number of semitones. The intervals stay the same, so chord shapes work identically. It is effectively like having a shorter-scale guitar tuned higher.
What if I need a key that requires capo past the 12th fret?
The 12th fret is one full octave. Going higher is physically impractical on most guitars because the frets are too close together and tone quality drops. If the chart doesn't show your key, try transposing in the other direction or using barre chords.
Does this work for ukulele or banjo?
The semitone math is universal, but the chord shapes shown here are for standard 6-string guitar tuning (EADGBE). Ukulele and banjo use different tunings, so the shape names and fingerings would be different.
Sources
- Wikipedia — Capo (history, mechanics, and usage)
- Wikipedia — Chromatic Scale (12-note scale used for transposition)
Method & review
Estimate only. Results reflect your inputs and standard formulas. Double-check important decisions independently.