How to Measure Guitar String Spacing for Picking and Fingerstyle

What String Spacing Means

String spacing refers to the horizontal distance between two adjacent strings, usually measured at the nut and at the bridge. The bridge spacing is the one that matters most for your picking hand, because it determines how far apart the strings are where you strike them. On an acoustic guitar, the bridge sits on the lower bout, and the saddle carries the strings. Measuring there gives you the practical distance your hand will feel.

Manufacturers rarely list bridge spacing in spec sheets, but you can calculate it yourself with a ruler. Different body designs affect the bridge width. As Martin's acoustic guitar types guide explains, body shapes range from parlor to jumbo, and each has distinct dimensions. This is a useful reminder that string spacing is not standardized; it varies from model to model. For a deeper look at the concept, see our article on guitar string spacing.

How to Measure Bridge String Spacing

To get an accurate reading, you need a straightedge with millimeter marks or a digital caliper. Place the guitar on a flat surface with the strings facing up. Hold the ruler so its edge touches the saddle and runs perpendicular to the strings. Measure from the center of the 6th string (the low E) to the center of the 1st string (the high E). That number is the total bridge spacing.

For a more detailed picture, you can also measure each adjacent pair of strings. This helps you spot any irregularity in the spacing, which can happen if the saddle slots are not cut evenly. Some players prefer to measure at the bridge pins rather than the saddle, but the saddle is the more reliable reference because it is the actual bearing point. If you plan to adjust the saddle, you may also want to consult how to replace an acoustic guitar saddle.

• Place the guitar face up on a flat surface.
• Set a rigid ruler across the saddle, perpendicular to the strings.
• Align the zero mark at the center of the low E string.
• Read the distance to the center of the high E string.

Why String Spacing Matters for Picking

For players who use a flatpick, string spacing affects how far the pick must travel between strings. A narrower spacing allows for fast cross-string movement because your pick moves less distance. Sweep pickers and alternate pickers often prefer this tighter feel. However, if the strings are too close, you may have a greater chance of hitting a neighboring string when you play with force.

On the other hand, a wider spacing gives each string more separation. This can increase accuracy when you need to hit a single string without grazing others. It also gives the pick more room to dig in without touching adjacent strings. The ideal spacing is a balance between speed and control, and it depends on your picking style and hand size.

Why String Spacing Matters for Fingerstyle

Fingerstyle players rely on their fingers to pluck individual notes, often within complex patterns. Wide spacing helps your thumb and fingers avoid brushing against other strings. Classical guitarists traditionally use a wider spacing, and Martin's guide to classical guitars notes that these instruments produce a soft attack with detailed sustain, making them ideal for fingerpicking. While not every fingerstyle guitarist chooses nylon strings, the wider geometry of classical guitars is one reason they remain popular for the style.

Fingerstyle playing on steel-string acoustics can also benefit from generous spacing, as it gives your picking-hand fingers clear lanes. Tighter spacing may lead to accidental harmonics or muted notes when your finger grazes another string. However, some players with smaller hands find wider spacing uncomfortable, so it is important to test both orientations. String material also influences feel, as Martin's string guide discusses, but spacing is a separate factor that determines hand placement. If you're exploring fingerstyle further, see our guide to fingerstyle guitars.

Nut Width and Bridge Spacing

The nut width, measured at the top of the neck, is the distance between the outer string slots. Bridge spacing is often wider than the nut width because the strings fan out from the nut to the bridge. Together they create the string taper that you feel across the fretboard. A guitar with a wide nut and narrow bridge may feel different than another with the same nut width but a wider bridge.

When you compare guitars, you should always measure both the nut and bridge spacing. A wide nut provides more room for your fretting hand, while a wide bridge gives your picking hand extra space. The bridge also plays a role in transferring string vibration into the guitar's top, as Martin's wood guide explains, and its dimensions contribute to the overall feel. For detailed advice on nut width, see our guide on nut width.

What to pick for your use

Questions

What is the standard string spacing at the bridge?

There is no universal standard. Typical spacing on electric guitars ranges from about 2.0 to 2.2 inches (50 to 56 mm) between the centers of the outer strings, while acoustic guitars often fall in a similar range. However, you should measure each instrument because body design and bridge construction vary.

How do I measure string spacing without a ruler?

A ruler is the most reliable method. If you lack a ruler, you can use a set of calipers or a marked card. For basic comparison, you can also trace the string positions on a piece of paper and measure later, but a direct measurement is more accurate.

Does nut width affect bridge spacing?

Yes, but they are independent. The strings taper from the nut to the bridge, so a wider nut often pairs with a wider bridge, but not always. Measure both to understand the full geometry of the guitar.

Why do classical guitars have wider spacing?

Classical guitars are designed for fingerstyle playing, and wider spacing gives the fingers more room to pluck individual strings without interfering with others. This tradition continues in modern classical guitars.