Guitar String Spacing: What It Means and Why It Matters

Nut and Bridge Measurements

String spacing is the distance between strings, and it is set in two places: at the nut near the headstock and at the bridge over the body. The nut spacing controls how the strings feel under your fretting hand, and the bridge spacing controls how they sit under your picking hand. Makers publish these measurements on spec sheets in the same units as nut width, so you can compare one guitar layout to another before you play it.

The two measurements work together. Strings start at the nut and spread outward toward the bridge, so the bridge spacing is wider than the nut spacing on almost every guitar. If you know both figures, you can picture how the string layout tapers from the neck to the body.

• Nut spacing: the distance between strings where they leave the nut; it shapes fretting-hand comfort.
• Bridge spacing: the distance between strings where they cross the saddle or saddles; it shapes picking-hand comfort.

Nut Spacing and Fretting Hand Feel

Nut spacing is the first thing you notice when you grab a chord. Wider spacing gives each finger more air between the strings, which can make barre chords and single-note runs feel cleaner if your fingertips are large. Narrower spacing brings the strings closer together, so players with smaller hands often reach chord shapes more easily. Neither layout is wrong: it is a matter of hand geometry and the music you play.

Because the nut sits at the top of the neck, its spacing shows up most in first position. The published nut width sets the overall width of the board, while the spacing figure tells you how the individual strings sit inside that width. The string set also contributes to feel: Martin's string guide notes that material, gauge, core design, treatment, and winding style all play a role in how a set performs, affecting brightness, warmth, volume, sustain, feel, and tuning stability. For more on the width itself, see the nut width guide.

Bridge Spacing and Picking Hand Feel

Bridge spacing matters most when you pick, strum, or pluck. A wider spacing spreads the strings across the body, which gives you room to hit a single string without brushing its neighbor. Fingerstyle players tend to like that extra separation because the thumb and fingers can move independently. Flatpickers who play fast single-note lines sometimes prefer tighter spacing because the pick travels a shorter distance between strings.

The hardware has to match the spacing. On an electric, the strings pass over the pickups and saddles; on an acoustic, they pass over the saddle. If the spacing does not line up with the hardware, the outer strings can feel or sound uneven. Bridge types explain the hardware that sets this part of the layout.

Spacing by Guitar Type

String spacing is not the same on every guitar type. A six-string electric, an acoustic dreadnought, a classical guitar, a twelve-string, and a bass each use a different layout to suit their neck widths, string counts, and playing techniques. Martin's acoustic guitar types guide describes the common body shapes and the twelve-string format, and those different instruments put the strings at different distances from one another.

Classical and nylon-string guitars often use a wider string arrangement because the right hand plays in a more deliberate position, and the nylon strings respond to a softer attack. Twelve-string guitars pair the strings in courses, so your hands meet pairs instead of single strings. Extended-range guitars add low strings across a similar neck width, which pushes the individual strings closer together. Bass guitars also vary by string count, and more strings usually means a tighter layout because they share the same general string width.

• six-string guitars
• acoustic guitars
• twelve-string guitars
• classical and nylon guitars

Comparing Spacing Specs When You Shop

When you compare guitars online, look for two figures: the nut width and the string spacing at the bridge. Some makers publish both, while others list only the nut width. If the bridge spacing is not published, you can measure it yourself with a ruler from the center of the low string to the center of the high string where they cross the bridge.

Spacing never works alone. The same measured spacing can feel different on a slim neck, a thick neck, a shorter scale, or a different body size. So compare spacing alongside scale length and string gauge, and keep the whole instrument in mind.

The Takeaway

String spacing is a feel spec, not a tone spec. It will not change your sound the way body size, tonewoods, or pickups do, but it can change how comfortably you play. As Martin's wood guide points out, materials also play a role in how a guitar feels in your hands, so spacing is one part of the overall comfort picture.

Start with the guitar you already play: measure its layout, then decide whether you want more room or a tighter feel. From there, use the buying guides to compare body styles, string counts, and sizes that match the spacing you prefer.

What to pick for your use

Questions

What is the difference between nut spacing and bridge spacing?

Nut spacing is measured at the top of the neck and controls fretting-hand feel. Bridge spacing is measured where the strings cross the body and controls picking-hand feel. They are related, but not the same, and both should be comfortable for the way you play.

Does string spacing affect fingerstyle playing?

Yes. Wider spacing separates the strings more, which makes it easier to pluck individual notes without touching a neighboring string. Fingerstyle players often prefer that feel, while players who move quickly between chords may prefer tighter spacing.

How can I tell if a guitar has the right spacing for me?

Play it and pay attention to two things: whether your fretting hand can form barre chords without strain, and whether your picking hand can hit any string cleanly without brushing the next one. A ruler can confirm the published measurements, but comfort is the real test.

Is narrower string spacing easier for smaller hands?

Often, yes. Closer strings can make chords and stretches feel easier if your fingers are short. But neck shape, scale length, and nut width also matter, so do not judge a guitar by spacing alone.

Does changing string gauge affect spacing?

The center-to-center spacing is set by the nut and bridge, not by the string itself. Thicker strings can make the gaps feel smaller, but the layout stays the same. String gauge still changes playability in other ways.

Why do twelve-string guitars feel different at the nut?

A twelve-string arranges the strings in pairs, so your fretting hand meets two strings where a six-string has one. That changes the feel of chords and the way the pick interacts with the strings, even if the overall nut width looks similar.