Replace the broken string by removing the old one, threading a new string through the bridge and tuning peg, and tightening it to pitch

A broken string stops you from playing, but replacing it takes about five minutes once you know the steps. You do not need special tools — a wire cutter helps but is not required. The hardest part is usually getting the old string out of the tuning peg, not putting the new one in.

The process is the same whether you broke a string during play or found it already snapped. You will need a replacement string that matches the gauge (thickness) of the one that broke — if you do not know which gauge, check the original packaging or look up your guitar model online. Most players keep a spare set in their case.

Key Takeaways

  • Remove the broken string by loosening the tuning peg until the string goes slack, then pull it out of the bridge and tuning peg.
  • Thread the new string through the bridge first, then up through the tuning peg hole, leaving enough slack to wrap around the post.
  • Wind the string around the tuning peg post three to four times for wound strings, one to two times for plain strings, then tighten to pitch.
  • Stretch the new string by pulling it gently away from the fretboard several times — it will go out of tune quickly until you do this.
  • Check that the string sits in the nut groove and bridge slot so it does not slip sideways during play.

Loosen and remove the broken string

Turn the tuning peg for the broken string counterclockwise (when looking at the headstock from the front) until the string goes completely slack. You should be able to move it by hand without resistance. This step matters because a tight string is hard to pull out and can damage the bridge or nut if you force it.

Once the string is slack, pull it out of the bridge. On an acoustic guitar, the bridge pin (a small wooden or plastic peg) holds the string in place — pull the pin straight up and out, then pull the string. On an electric guitar with a through-body bridge or a tremolo system, the string usually pulls straight through. If you are unsure how your bridge works, look at the back of the guitar where the strings enter.

Pull the string out of the tuning peg hole at the headstock. If the old string is wound tightly, you may need to unwind it a bit more or wiggle it gently. Once it is out, you can throw it away.

Insert the new string at the bridge

Take the new string and insert the ball end (the small metal bead at one end) into the bridge hole. On an acoustic, push it in until it seats, then replace the bridge pin by pushing it straight down until it is snug — do not hammer it. The pin should sit flush with the bridge, not sticking up. On an electric guitar, thread the string through the bridge hole or over the bridge saddle, depending on your guitar type.

Pull the string up toward the headstock with light tension so it lies flat against the fretboard. Make sure it sits in the groove at the nut (the white or bone piece at the top of the fretboard) — if it does not, the string will buzz or slip. You may need to guide it into place by hand.

Thread the string through the tuning peg

Push the string through the hole in the tuning peg post. Leave enough slack so that you can wrap the string around the post three to four times — roughly 2 to 3 inches of slack is typical. Too much slack means you will wind forever; too little means the string will not hold tension.

Bend the string at a right angle just above the tuning peg post so it forms a clear corner. This corner is where you will start wrapping. Hold the string with one hand and turn the tuning peg with the other so the post winds the string around itself. The string should wrap downward on the post, not upward — this keeps tension even and prevents the string from slipping.

Wind and tighten to pitch

Turn the tuning peg so the string wraps around the post. For wound strings (the thicker ones, usually the lower three strings on a six-string guitar), aim for three to four complete wraps. For plain strings (the thinner ones), one to two wraps is enough because they hold tension better. Stop wrapping when the string begins to tighten noticeably.

Once the string has wrapped enough times, continue turning the tuning peg until the string reaches the correct pitch. Use a tuner — a clip-on tuner or a tuner app on your phone works fine — to check the pitch as you tighten. Tighten slowly so you do not overshoot and snap the new string. The string should be snug but not rock-hard; you should be able to bend it slightly with your finger.

If the string is still slack after wrapping, you may have left too much slack at the start. Loosen the tuning peg, pull out a bit of slack, and wrap again. If the string is too tight before you have wrapped enough times, you left too little slack — loosen it, add more slack, and start over.

Stretch the new string and check tuning

New strings go out of tune quickly because the metal is still settling. Grab the string about halfway down the fretboard and pull it gently away from the fretboard — not hard enough to hurt your hand, just enough to feel resistance. Do this three or four times, then check the tuner. The pitch will have dropped. Retune to pitch and repeat this stretching two or three more times until the string holds its pitch between stretches.

Check that the string sits properly in the nut groove at the top of the fretboard and in the bridge slot. If the string is resting on the side of the nut or bridge instead of in the groove, it will buzz or slip. You may need to guide it into place by hand or, if the groove is too shallow, have a technician file it slightly deeper.

Trim excess string if needed

Once the string is at pitch and stretched, you can trim the excess at the headstock if it bothers you. Use wire cutters to snip the string about an inch above the tuning peg post — leave enough so the string does not unwind. Trim carefully so the cut end does not fly into your face. This step is optional; many players leave the excess on.

Check the tuning one more time after trimming. The act of cutting can sometimes shift the pitch slightly because it releases a tiny bit of tension.

Frequently Asked Questions

How do I know which string gauge to buy?

Check the original packaging your guitar came with, or search your guitar model and "string gauge" online. Most acoustic guitars use .010 to .047 gauge, and most electric guitars use .009 to .046 or .010 to .046. If you broke a string and do not know the gauge, you can buy a full replacement set — it is cheaper than buying single strings and you will have spares.

Can I replace just one string or do I have to replace all of them?

You can replace just the broken one. However, if your other strings are old, dull-sounding, or corroded, replacing the whole set at once sounds better and costs less per string than buying singles. Many players replace all six strings every three to six months depending on how often they play.

Why does my new string sound different from the old ones?

New strings are brighter and more resonant than old ones. The sound will settle and match the rest of the set within a few hours of playing. If you want all strings to sound the same when ready, replace the whole set at once.

What if the string breaks again right after I replace it?

Check that the string is not catching on a sharp edge at the bridge, nut, or tuning peg. Look for burrs or cracks in the hardware. If the nut or bridge has a rough spot, a technician can smooth it. Also check that you are not bending the string too hard when you play — if you are new to guitar, this is the most common cause of early breakage.

Do I need to replace the bridge pin when I replace a string?

No, the same bridge pin works for any string. However, if the pin is cracked or does not fit snugly, replace it. Bridge pins are cheap and come in sets of six or more. A loose pin lets the string slip and causes tuning problems.