How to Change Classical Guitar Strings (Step by Step)

At some point in our  guitar journey we may want or need to change classical guitar strings.

It’s tempting to get intimidated by the special knots the nylon-string classical guitar requires.  But like most things, it’s only hard until you do it once or twice.

How to Change Classical Guitar Strings: Tools

Before you get started, first assemble your tools.

  • A string winder (optional, but highly recommended).
  • Strings (just about any classical guitar strings will do, more on this below).
  • Nail clippers or wire cutters, for the final haircut.

You’ll probably be most comfortable sitting in a chair.  This way you can put the guitar across your lap, hold it between your knees, and turn it around as need be.

Which Strings Should I Use?

There are many classical guitar strings on the market.  But unless you’re an advanced player, you probably won’t be able to tell the difference between them.

The most important thing is that you use classical guitar strings, not steel strings (or regular acoustic strings).  The tension on steel-string guitars is much higher, and classical guitars are not built to handle that much tension.

Also, steel strings have ball-ends (balls on the end of the strings).  Classical guitar strings do not, so they require a knot.  Don’t buy anything with a ball-end.

Most players will be fine with normal tension strings made by any major manufacturer.  Whatever they have at the local music store.  Perhaps the most common and widely available is the D’addario Pro-Arte Normal Tension Classical Guitar Strings.

Don’t buy any string with a ball-end.

If you test many different brands and models over time, you may find a specific set sounds especially good on your guitar.

But most players benefit more from improving their tone and technique than by switching brands of strings.

Tutorial: How to Change Classical Guitar Strings

Step One: Remove one string

To change a classical guitar string, use your string-winder to fully loosen a string.  Many players begin with the lowest sounding string (6th string, Low E).

Step Two:  Tie a new string to bridge

Important:  You may find one end of the string has a different texture, and a wider wrap.  This end goes at the tuning key, NOT the bridge.  Use only the consistent end of the string at the bridge.  

Put the end of the string through the hole in the bridge.

Bring the tail up and around the main length of the string.  You can make a crease in the string to mark your place if you like.

Tuck the tail of the string under the loop you’ve just created.

change classical guitar strings tie knot

Put the string through the hole.

Bring the tail up and around.

Tuck the tail under the loop created.

On the low E (6th) string, and optionally the A string (5th), you only need to tuck the string under once.

For the other strings, you’ll need to wrap it through twice.

string a classical guitar knot

To “seat” the knot, make sure the tail crosses under the knot over the lip of the bridge.  This gives the knot its strength.

Make sure the tail crosses over the lip of the bridge.

switch guitar strings

Tighten the knot, with the tail crossing over the lip of the bridge.

Step Three:  Attach the string to the tuning key

Once you’ve knotted the bridge, put the string through the hole in the middle of the post in the tuning key.

Put the string through the hole.

To figure out how much slack you’ll need, hold the string a finger-height above the 12th fret.  Notice how much slack that leaves at the tuning key, or make a crimp or crease in the string at the tuning key.

slack in guitar string

For slack, give a finger-height at the 12th fret.

Twist the tail of the string around the length of the string two or three times and hold it firm.

Point the tail of the string towards the inside or middle of the headstock.  This is optional, but helps the strings look consistent and organized.

Twist the tail around the string 2 or 3 times and tighten it.

Then use your string winder to tighten the string.  When you cross over the wound string on the post, guide the tightening string to the middle of the headstock (instead of outwards towards the tuning key).

Wind all strings toward the center of the headstock for a tidy look.

Continue tightening the string until it’s near the correct pitch.

Step Four: Repeat with the other strings.

Step Five (Optional): Double-Loop the high E

For some reason, when we change classical guitar strings, the bridge knot of the high E string sometimes slips.  Because it’s under tension, it then “whips” the top of the guitar, just behind the bridge.

It has such a force that it can go through the finish and take out a chunk of wood.

It’s not uncommon to see a “whip mark” on classical guitars behind the E string.

guitar whip mark

The high E sometimes slips and damages the top of the guitar.

One way to prevent this is to double-loop the high E string through the bridge.

Instead of putting the string through the hole once, you bring it around and go through again, creating a loop.

Loop the high E string through the bridge twice, then tie as usual.

Tie the double-looped string exactly like the others, wrapping the tail around both loops.

You then knot it exactly the same as the others, this time tucking the tail under and around both loops.

Step Six (optional): Give it a stretch

You can stretch your strings manually and reduce the time they take to settle in.  They will still stretch naturally for a couple of days, but this can speed up the process.

Use your thumb and/or fingers to torque the string along its length.

stretch new guitar strings

String Stretching: Press with the thumb and lift with the fingers.

String Stretching: Press with the index finger while lifting with the others.

You can continue to do this periodically until they no longer slip wildly out of tune between or during practices.

Step Seven (optional):  The Final Haircut

Finally, we trim the excess string and get everything neat and tidy.

Trim the tails to the next string.

At the bridge, trim the tail to the distance to the next string.  This keeps all the tails a consistent length.

Trim the tails at the headstock.

Then, trim the tails at the tuning keys approximately the same length as at the bridge.

Success!  Now What?

After you finish changing strings, celebrate your grand accomplishment with a drink or treat of your liking.  It’s a big job.

Expect frequent tuning for the first few days to a week.  This is natural and comes with the territory.  Be patient.  On the upside, you’ll probably notice a much nice sound.

While your strings are still stretching, you may practice more rasgueados.  These give the strings action and help them settle in (and are great for the hands).

How Often Should I Change Classical Guitar Strings?

New strings sound richer and brighter than old strings.  The treble strings make less extra nail noise (if you use nails).  And the basses sound punchy and strong.

So when should you change them?

There is no one correct answer.  We can technically play them until they break and fall off the guitar.  But we may enjoy fresher strings now and then.

  • If you ever get into a rut and don’t feel like practicing, a string change and guitar spit-shine may get the juices back flowing.
  • If you have a daily guitar practice, you may want to change strings just before traveling or at another time when you’ll be away from your guitar for a few days.
  • If you want to eliminate the question forever, decide on a schedule and put it on your calendar.  Be it yearly, quarterly or monthly, you’ll know when it’s time.

Some players change classical guitar strings once every few years.  Others change them every few weeks.  Some performers change them almost daily.

It’s truly a personal choice.  (But when it doubt, switch them out!))

Allen Mathews

Hi, I’m Allen Mathews. 

I started as a folk guitarist, then fell in love with classical guitar in my 20’s. Despite a lot of practice and schooling, I still couldn’t get my music to flow well. I struggled with excess tension. My music sounded forced. And my hands and body were often sore. I got frustrated, and couldn’t see the way forward. Then, over the next decade, I studied with two stellar teachers – one focused on the technical, and one on the musical (he was a concert pianist). In time, I came to discover a new set of formulas and movements. These brought new life and vitality to my practice. Now I help guitarists find more comfort and flow in their music, so they play more beautifully. Click here for a sample formula.

Become a Member and Play More, Beautifully!

“The basics are the basics, and you can’t beat the basics.”
Charles Poliquin

Join the program that takes you from the beginning fundamentals to advanced mastery, so you…1

  • Move your hands safely and fluidly
  • Enjoy fulfilling practices and meaningful work
  • Play beautifully with expression and flow

Click the button to take a step towards an
organized, effective guitar practice. >>>

Featured Courses

jesu bach classical guitar

Jesu, Joy of Man’s Desiring – Bach

One of the best loved of all classical pieces.

See more...

read music guitar high positions notes

Play and Read Music in the Higher Positions

Learn to read music and identify notes on the entire neck.

See more...

how to play segovia scales

Better Technique, with “Segovia’s Favorite Scales”

Detailed explorations of this popular technical tool.

See more...

pachelbel's canon guitar

Pachelbel’s Canon in D

Great for beginners to intermediate players.

See more...

how to read music for guitar

How to Read Music for Guitar

A full course to get you started reading music

See more...

malaguena guitar

Malagueña, by Ernesto Lecuona

One of the most fun and recognizable guitar songs in the world!

See more...