How to use a guitar capo: shapes and sounding chords

A full guitar capo raises the pitches of the strings left open above it. When you move an open-position chord shape to the same position relative to the capo, its sounding chord rises by one semitone per capo fret. For example, a G shape with a capo at fret 2 sounds A major.

The shape name describes your fingering; the sounding name tells another player which harmony you produce. This lesson uses a full capo across all six strings, standard tuning and ordinary semitone frets. Partial capos and other tunings need different calculations.

For the playing task, you should be able to form G, D, Em and C comfortably. Learn those shapes in the first-chord lesson before adding a capo.

Fit the capo and check the strings

Tune without the capo first, using the standard-tuning lesson. Use a capo suitable for your instrument and follow its fitting instructions; spring, strap and adjustable designs close differently.

For the exercise, fit it at physical fret 2: just behind that fret wire, on the side towards the headstock. Cover all six strings without pulling them sideways. With an adjustable model, use only enough pressure for clear notes, following its instructions.

Pick each string separately without fretting. Check for a clear sound and recheck tuning after fitting or moving the capo. The notes are now higher, so a tuner fixed to the six standard open-string names may need a different setting, such as chromatic mode; follow its instructions. The symbols ♯ and ♭ mean sharp and flat. At capo 2, the unfretted strings should sound F♯, B, E, A, C♯, F♯, from thickest to thinnest. Do not retune those notes back to E, A, D, G, B, E with the capo still on for this exercise.

Count frets from the capo or from the nut

Physical frets keep their normal numbers from the nut. Relative frets count from the capo: relative 0 means the string sounds at the capo without a fretting finger.

At capo 2, add 2 to a relative fret number to find the physical fret. For a D shape, the positions are:

Leave strings 6 and 5 out of this shape. The fingering is D-shaped, but these pitches make E major. A finger remaining at the same physical fret on the bridge side of the capo produces the same pitch; fitting a capo does not transpose that finger’s note automatically. You must keep the shape’s distances from the capo.

Check a chart’s numbering instructions before playing it. The compact patterns below are relative to the capo, read from low E to high E. 0 means no fretting finger, and x means leave that string out.

Work out the sounding chord

The root is the note that names the chord: G for G major, or E for E minor. Count upwards from the shape’s root by the capo fret number. A semitone is one fret’s pitch distance. From G, the moves to G♯ and then A total two semitones, so capo 2 turns a G shape into A.

Move the root and keep the chord type: major stays major, minor stays minor. An Em shape at capo 2 therefore sounds F♯ minor, written F♯m. The capo does not turn every shape into a major chord.

Capo chord chart: G, D, Em and C shapes

Here are the four shapes used in this lesson. Each table entry is the sounding chord:

For these ordinary equal-tempered guitar positions, A♭ and G♯ name the same pitch, as do B♭ and A♯. Spell the sounding chord to suit the music: the capo 3 progression below is written with flats. This is a four-shape reference, rather than a chart of every possible chord.

Play a whole progression at capo 2

Use these relative shapes, with the finger choices from the first-chord lesson linked above. Move the fingers to their positions above the capo; do not copy the old physical fret numbers. Strum all six strings for G and Em, strings 4 through 1 for D, and strings 5 through 1 for C.

Check the four shapes untimed, picking their intended strings separately. Stop if playing hurts. If moving between them is difficult, use the chord-change exercises before adding the count.

The original practice sequence below uses 4/4: four quarter-note beats per bar.

1. Count one full bar, 1 2 3 4, before starting. If you use the metronome, select four beats per bar and let each click mark a number. Try 60 BPM or a slower comfortable pace.
2. Strum the G shape once on beat 1 of bar 1. Let it ring while you count 2, 3 and 4.
3. Change to the D shape on the next 1. Continue through Em and C, one full bar per shape, with one downstrum on each bar’s 1.
4. Return to G on the following 1 and play the four-bar sequence once more: eight bars in total. After bar 8’s C shape, gently stop the strings on the following 1 and finish. There is no ninth strum.

That gives eight strums over 32 played beats. Keep the beat spacing through each change; if you need a pause to form a shape, stop and work on that change separately then restart with the one-bar count-in.

Write this down for someone playing without a capo: A, E, F♯m, D; one bar each. “G, D, Em, C with capo 2” describes your arrangement, while the sounding names let another instrument match the harmony. Its notes may be in another register or voicing.

Choose a capo fret for a target progression

Suppose you want to sound B♭, F, Gm, E♭ using the same four shapes. Start with the first root: G to G♯ is one semitone, to A is two, and to B♭ is three. Try capo 3, then check every chord:

• G shape plus three semitones gives B♭.
• D shape gives F.
• Em shape gives Gm, keeping the minor type.
• C shape gives E♭.

All four agree, so capo 3 works for that progression. Refit and check tuning before playing. Do not choose a position from the first chord alone if the other shapes have not been checked. A capo also cannot lower these same shapes below their uncapoed pitches; a lower target needs another arrangement or suitable shape choices.

Check your answers

1. Does the D shape at capo 2 sound D or E? What is the physical fret for each string in its table?
2. At capo 2, what does relative 0 mean? Do you leave that string out?
3. At capo 4, what do the G and Em shapes sound?
4. If you move from capo 2 to capo 3 and keep the same relative shapes, what happens to all four sounding chords?
5. How many strums are in the complete eight-bar exercise, and when do you stop?
6. Which capo fret lets G, D, Em and C shapes sound C, G, Am and F? Check all four changes.

If the result does not match

If a chord’s name seems wrong, check the capo fret, whether the chart names shapes or sounding chords, and whether you moved the fingers relative to the capo. Then check the intended strings; low E is still excluded from the C shape, even though the capo changes its pitch.

For buzzing or uneven pitch, check the capo’s position and fitting instructions before adding pressure. Remove it and compare the ordinary open strings if necessary. Recheck tuning after removal. The tuning-stability guide helps you record a persistent problem without guessing at hardware adjustments.

A capo can make some arrangements easier, but it does not remove every difficult shape. Barre-chord alternatives covers smaller voicings and another capo example.

Source notes

D’Addario’s capo guide explains the semitone-per-fret change and moving familiar shapes relative to the capo. Shubb’s fitting guidance covers placement, pressure and avoiding sideways string movement; follow your own model’s mechanism instructions. Fender’s capo overview distinguishes capo types and discusses tuning after removal. The chord chart, complete progression and questions here were written for this lesson.