Restringing an acoustic guitar takes about 15 to 20 minutes once you know the steps, and costs between $5 and $15 for a new set of strings

You will need wire cutters, a string winder (optional but saves time), a tuner, and a new set of acoustic guitar strings. The process is the same whether you are replacing one broken string or all six: loosen the tuning peg, remove the old string, insert the new one, wind it tight, and tune. The hardest part for most people is not breaking the new strings while winding them, and not over-tightening them at the bridge.

This guide walks you through each step in order, with the exact tension and timing that keeps strings from snapping. You will also learn the two places strings break most often and how to avoid both.

Key Takeaways

  • Loosen the tuning peg all the way down before you pull the old string out, or you risk cracking the headstock.
  • The bridge pin holds the string in place at the bridge end—pull it straight up with a gentle rocking motion, do not pry sideways.
  • Wind the string around the tuning peg post three to four times before you start turning the peg, or the string will slip.
  • Turn the tuning peg toward the center of the headstock (not outward) to tighten, and stop when the string reaches pitch—over-tightening snaps new strings.
  • Trim excess string at the headstock with wire cutters after tuning, leaving about a half-inch of slack so the string does not unwind.

What You Need Before You Start

Gather these items in one place before you remove the first string: a new set of acoustic guitar strings (bronze or phosphor bronze are standard), wire cutters, a tuner (a clip-on tuner costs $10 to $20 and clips to the headstock), and optionally a string winder (a hand crank tool that speeds up the winding step). If you do not have a tuner, you can use a tuner app on your phone, though a physical tuner is more reliable in noisy rooms.

Work on a flat surface where the guitar will not roll—a couch, bed, or table with a towel underneath. Keep the old strings in front of you as a reference for the order they came off; acoustic strings are thicker on the lower three strings (the bass strings) and thinner on the upper three (the treble strings). If you mix them up, the guitar will sound wrong and the strings may break under the wrong tension.

Loosen and Remove the Old String

Start with the thickest string (the low E string, closest to your face when you hold the guitar in playing position). Turn the tuning peg at the top of the headstock counterclockwise—this loosens the string. Turn it all the way until the string is slack and hangs loose from the tuning peg. Do not skip this step; if you try to pull a tight string out of the bridge, you can crack the headstock or damage the bridge itself.

Once the string is loose, move to the bridge at the bottom of the guitar body. You will see a small wooden or plastic pin holding the string in place in the bridge hole. Grip this bridge pin and rock it gently side to side—do not pry it straight up with a screwdriver, as this can split the bridge. Once it moves freely, pull it straight up and set it aside. The old string will now slide out of the bridge hole. Pull the string out of the tuning peg hole at the headstock and discard it.

Insert the New String at the Bridge

Take the new string that matches the one you just removed (same thickness and position). Insert the ball end (the small metal loop at one end) into the bridge hole. The ball end goes in first and sits at the bottom of the hole. Push the bridge pin back into the hole on top of the string, pressing it down until it sits flush with the bridge. The pin holds the string in place and prevents it from sliding out.

The string should now be anchored at the bridge and hanging loose toward the headstock. Do not pull it tight yet—that comes after you wind it around the tuning peg. If the bridge pin does not sit flush, remove it and check that the string's ball end is all the way at the bottom of the hole, then reinsert the pin.

Wind the String Around the Tuning Peg

Pull the string up toward the headstock and thread the other end (the plain end without the ball) through the hole in the tuning peg post. Leave about 2 to 3 inches of slack—this is the length you will wind around the post. Bend the string at a right angle where it exits the peg hole, so it wraps around the post rather than sliding through.

Before you turn the tuning peg, wrap the string around the post by hand three to four times. This creates friction and prevents the string from slipping as you tighten. The wraps should spiral downward on the post (toward the body of the guitar), not upward. Once you have three wraps, you can begin turning the tuning peg clockwise (toward the center of the headstock) to tighten the string. If you have a string winder, insert the tuning peg into the winder's socket and turn the crank; this is faster and more even than turning by hand.

As you wind, the string will rise in pitch. Keep winding until the string reaches the correct pitch according to your tuner. For a standard acoustic guitar, the strings from thickest to thinnest are E, A, D, G, B, E. Stop winding as soon as the tuner shows the correct note—do not over-tighten. New strings are more prone to breaking if you pull them too tight, and over-tightening also puts stress on the neck.

Trim and Tune All Six Strings

Once the first string is at pitch, use wire cutters to trim the excess string at the headstock, leaving about a half-inch of slack. This prevents the string from unwinding and also keeps the headstock neat. Repeat the entire process for the remaining five strings, working from the thickest to the thinnest.

After all six strings are wound and trimmed, go back and retune each one. New strings stretch as they settle, so the pitch will drop slightly over the next few hours. Tune them to pitch, then check again in 10 minutes and retune if needed. This is normal and does not mean you did anything wrong. Within a day or two, the strings will stabilize and hold their pitch much longer between tunings.

Common Mistakes and How to Avoid Them

The most common mistake is winding the string around the tuning peg post fewer than three times before turning the peg. When you do this, the string slips and unwinds as you tighten, and you end up with loose wraps that buzz or rattle. Always wrap by hand three to four times first, then turn the peg.

The second mistake is over-tightening the new string. New strings are under less tension than old, worn strings, so they feel looser even when they are at the correct pitch. Trust your tuner, not how the string feels. Stop as soon as the tuner shows the right note. If you keep turning after that, the string will snap—usually within the first few hours as it settles.

The third mistake is prying the bridge pin out sideways with a screwdriver or knife. This can split the wooden bridge and cause expensive damage. Always rock the pin gently side to side first to loosen it, then pull straight up.

Frequently Asked Questions

Can I replace just one string, or do I have to replace all six?

You can replace just one string. Follow the same steps for that string alone. However, if your guitar is more than a year old and you have never replaced the strings, replacing all six at once will make a bigger difference in tone and playability. Old strings sound dull and are more likely to break.

What if a new string breaks while I am winding it?

This usually means you over-tightened it or wound it unevenly around the post. Remove the broken string and start over with a fresh one from the pack. Wrap it three to four times by hand before turning the peg, and stop as soon as the tuner shows the correct pitch. Do not keep turning after that.

How long do acoustic guitar strings last?

Strings last between three months and a year depending on how often you play. If you play daily, replace them every three to six months. If you play a few times a week, they will last six to twelve months. They wear out faster if you play with a pick or if you have acidic sweat, which corrodes the metal.

Do I need to loosen all the strings before replacing one?

No. You only need to loosen the one string you are replacing. Loosening all six at once puts less tension on the neck, which can cause the neck to shift slightly and throw off your intonation. Replace strings one at a time, keeping the others at pitch.

What is the difference between bronze and phosphor bronze strings?

Bronze strings are brighter and cheaper, but they corrode faster and lose their brightness within a few months. Phosphor bronze strings cost a bit more but last longer and maintain their tone. For most players, phosphor bronze is worth the extra cost. Both types use the same restringing process.