Best Capo for Acoustic Guitar

The best capo for an acoustic guitar is the one that holds all six strings cleanly with the lightest squeeze, goes on and off with one hand, and fits your neck without rattling or pulling the guitar out of tune. For most players that means a trigger or spring clamp capo with soft silicone pads. If you play a 12-string or a classical guitar, you need a wide-body model instead.

Here is the short version before the details:

• Standard 6-string steel-string acoustic: a metal trigger capo or a spring clamp capo.
• Tight budget, simple needs: a plastic spring clamp capo.
• 12-string or classical guitar: a wide-body spring clamp capo made for wider fretboards.
• Switching between acoustic and electric: a trigger capo that fits most necks, so one capo covers both.

How to choose a capo for an acoustic guitar

A capo raises the pitch of every open string by clamping across the fretboard, which lets you play the same chord shapes in a different key. Wikipedia describes it as a device that works like a new nut at a higher fret. That simple job still goes wrong in a few predictable ways, and each one comes from a mismatch between the capo and the guitar.

Neck radius and width

Acoustic necks are not all the same. Some fretboards are flatter, some are more curved, and some are wider at the nut. A capo bar that is too curved for a flat neck leaves the outer strings loose, and a bar that is too flat for a curved neck leaves the middle strings buzzing. Check that the bar sits flat across all six strings at the fret before you decide the capo is the problem.

Width matters just as much. A capo built for a standard 6-string neck can run out of reach on a wider one, which is why wide-body capos exist. If your guitar has a wide neck, look at the listing and confirm the capo is made for wide fretboards before you buy.

Clamp pressure and tuning

A capo has to press hard enough to stop every string cleanly. It does not need to press harder than that. Too much pressure bends the strings slightly sharp, so chords sound off even though the guitar was in tune a minute ago. Wikipedia notes that a capo should be applied after a fresh tuning, placed directly behind the fret, so every string gets the same position and pressure. If the strings are bent or mispositioned, the guitar sounds out of tune in the new key.

Soft silicone or rubber pads help in two ways. They grip the strings without much force, and they protect the fretboard and finish. Wikipedia also warns that some types of capo can mar the neck if applied incorrectly, so pads and careful placement are worth paying attention to on a guitar you care about.

Trigger vs screw vs spring

The mechanism decides how the capo feels on stage and at home.

• Trigger capos clamp with a squeeze handle. They are quick to move and easy to use with one hand, which suits songs where the capo changes mid-set.
• Spring clamp capos work in a similar way, with a spring doing the holding. They are usually simple, light and easy to reposition.
• Screw capos let you set the pressure exactly with a screw. They are slower to move, but some players like the control.

If you change capo position often, pick a trigger or spring model. If you set the capo once and leave it, a screw model is a reasonable choice too. You can browse more of each type in our acoustic guitar capos category.

12-string and classical guitars

Wide necks are where most standard capos fail. A 12-string has the extra strings to cover, and a classical guitar has a wider, flatter fretboard. Both need a capo with a wider body or a bar long enough to reach across. Wikipedia also notes that some 12-strings are tuned below standard pitch, and a capo can raise them back to standard tuning.

We keep these in their own categories: 12-string guitar capos and classical guitar capos. If you play several of these instruments, one wide-body capo can cover them all.

Our picks by use

These are the capos from our shop that suit acoustic guitars, grouped by what you need. Everything below comes from the product pages themselves, so check the listing for current colors and details.

Best all-round metal capo: Trigger Capo PLUS

The Trigger Capo PLUS is a metal trigger capo with an aluminum alloy body and soft silicone pads. The listing says it fits ukuleles, mandolins, electric, acoustic, bass and classical guitars, and it is sold in seven colors. If you play more than one instrument and want a single capo for all of them, start here.

Best for a wooden look: Trigger Capo PLUS, Wooden Style

The wooden style version uses the same trigger idea with an aluminum body under a wood finish, in four finishes. The listing describes soft rubber pads and a quick one-handed fret change. It is a good match for an acoustic where you want the capo to look like part of the guitar.

Best for regular gigging: Trigger Capo PRO

The Trigger Capo PRO is a metal trigger capo with an aluminum body, silicone cushion pads and a quick release, available in five colors. Pick it when you want a sturdy trigger capo for regular gigging and practice on an acoustic or electric.

Best for wide necks: K8 Spring Clamp Capo PRO

The K8 Spring Clamp Capo PRO has a wider metal body made for 12-string and classical guitars, according to its listing. It uses a steel spring, silicone cushion pads on both inner sides, and a quick-change handle, and it comes in black, gold and silver. If a standard capo has never sat right on your wide neck, this is the one to try.

Best simple, affordable option: Basic Spring Clamp Capo

The Basic Spring Clamp Capo has a hardened plastic body, a steel spring, soft pads and a contoured handle. It also has a bridge pin puller on one end of the handle, which is handy when you restring. It comes in five colors: black, blue, red, white and yellow. It is the simplest way to get a working capo for a standard acoustic.

Do professional guitarists use capos?

Yes. Wikipedia says some styles use a capo often, including flamenco, Irish traditional music, and British and American folk music, while classical and jazz players rarely do. It also lists many rock and roll musicians influenced by folk and blues who use the capo, among them Keith Richards, George Harrison, Tom Petty and Bob Dylan. It adds that in many cases they have gone past using it only to change the key.

The reason is practical. A capo lets you keep familiar open-position chord shapes in any key, including keys that suit a singer’s range better. It also lets two guitarists play the same progression with different voicings, which Wikipedia says gives a fuller sound than two guitars playing in unison. Playing with a capo has the same effect as retuning all strings up the same number of steps, without the retuning, and it only changes the open notes, so you do not have to relearn the fretboard.

New to capos? Our guide on how to use a capo explains where to place it and how to find the new key.

What about electric guitars?

Most of the advice above carries over to electric guitars, since the job is the same. Electric necks are often slimmer, and a trigger capo that fits most necks works well on both. If you play both, look at our electric guitar capos and our full guide to the best capos across every instrument.

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