Online Guitar Tuner – Quick, Easy, Fun

Welcome to our free online guitar tuner, the fastest way to tune your acoustic guitar. No other tuner wiggles as good as ours!

Quick start guide: Click each string to hear the reference tone (how the string is supposed to sound), and tune your guitar to match. Click the ‘loop’ button to hear the note continuously. To stop the loop, click the string again (or turn the button off.)


Click on a string.

How to Tune a Guitar Using The Tuner (Detailed Steps)

Ok, for the absolute beginners out there (we’ve all been there), this is what to do:

  • First of all, grab your guitar. Ideally use a plectrum to pluck the strings (it gives you a cleaner sound), but that’s optional.
  • Start with the thickest string (the low E), that’s the first string on the left as you look at the tuner. Click on the string, then strum the low E string of your guitar, and adjust the string so it matches the tuner’s E.
  • Work your way, left to right, through the rest of the strings all the way to the high E string on the right (the thinnest string).
  • Remember to click on the ‘loop’ button (so it’s green) then the notes will ring continuously.

Fine Tune

The frustrating thing about tuning up a guitar is that as you vary the tension of one string, you can ‘knock out’ the tuning of the other strings. To counter this, you’ll need to fine tune all the strings, several times, until they’re all in tune (several passes are required. This might feel a bit tedious, but it’s the only way).

New Strings

If you’re using a new set of strings, expect them to drop out of tune a lot. That’s fine, just keep adjusting the tuning pegs to get the strings into tune. You’ll notice the strings keep dropping out of pitch – don’t worry, that’s normal. Just keep fine-tuning each string with this online tuner. Eventually, they’ll stay in pitch. Nylon strings are notorious for taking longer to settle into tune.

To help ‘bed in’ new strings, you can gently yank them upwards from the center of the string with your hand- this helps just to stretch them a little (don’t do it too hard, or you’ll risk snapping the string.)

When strings you’ve had on for a while are hard to keep in tune, it’s time to switch them out for some new ones (you’ll be pleasantly surprised how good new strings sound, I forget every time, and am then like ‘wow’).

How Often Do You Need to Tune the Guitar?

It depends on how often you play. Personally, I tune the guitar every time I play it (well, fine tune it) because even slight changes in room temperature can throw the tuning out. On the other hand, if you haven’t played your guitar in days, then definitely tune it. Your ears (and your guitar) will thank you for it.

Once the guitar is tuned, time to play! Enjoy 🙂

Future Development

Currently, this guitar tuner is only designed for an acoustic guitar in standard tuning (EADGBe). We’re going to add an electric guitar option, bass guitar, alternate tunings (e.g., half step down, drop D, drop A, open C, etc.), and potentially expand it out to other instruments (not just guitars). We’ll also add a microphone option, so the app tells you what to do (go higher or lower) so you’ll be less reliant on your ear. Watch this space, and thanks for dropping by.

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About Ged Richardson

Ged Richardson is the Founder and Editor-in-Chief of He has been featured in Entrepreneur, PremierGuitar, Hallmark, Wanderlust, CreativeLive, and other major publications. As an avid music fan, he spends his time researching and writing about new and old music, as well as testing and reviewing music-related products. He's played guitar in various bands, from rock to gypsy jazz. Be sure to check out his YouTube channel, where he geeks out about his favorite bands.

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