Capo Calculator – Find the Easiest Capo Position

What a capo does

A capo is a clamp that presses all six strings down at one fret. It acts like a movable nut: the guitar becomes shorter, every open string goes up in pitch, and every chord shape you know now sounds higher. With a capo on the 2nd fret, a G shape sounds as an A chord, a C shape sounds as D, and so on. The rule is simple: each fret raises the pitch by one semitone.

Using the calculator

Type the chords exactly as they appear on the song sheet — the sounding chords. The table shows what you'd have to play at every capo position from no capo up to fret 7, with a difficulty rating based on the open shapes beginners learn first (G, C, D, A, E, Am, Em, Dm and their sevenths and suspensions). The best row is highlighted with a star.

For example, a song in Bb F Gm Eb needs four barre chords without a capo. With the capo on fret 3 you play G D Em C — four of the first chords everyone learns — and the song sounds exactly the same.

Shape key and sounding key

Guitarists often talk about two keys at once. The shape key is the key your fingers think in; the sounding key is what the audience hears. The second part of the tool converts between them: shapes in G with the capo on fret 2 sound in A. The formula is:

capo fret = sounding key − shape key   (counted in semitones, 0–11)

Common capo positions and what they give you

Capo tips

• Place the capo just behind the fret wire, not in the middle of the fret. This keeps the strings in tune and stops buzzing.
• Use the lightest pressure that gives clean notes; too much tension pulls strings sharp. Check tuning with the tuner after fitting it.
• Higher capo positions sound brighter and more “jangly”. Two guitarists can play the same song with different capo positions to fill out the sound.
• Above the 7th fret, the neck gets cramped. For low keys, tuning down a half step may be a better choice than a high capo.

Read our complete guide to using a capo for more examples.

Frequently asked questions