Free Online Guitar Tuner
Quick tuning tool for your guitar

Maztr's free online Guitar Tuner allows you to tune a 6-string guitar using Standard Tuning. Standard tuning sets the string pitches as E, A, D, G, B & E, from the thickest, lowest-pitched string (low E2) to the thinnest, highest-pitched string (high E4).

Although some guitarists, such as fingerstyle guitarists, sometimes use creative tunings for their guitars, standard tuning is most commonly used for both acoustic and electric guitars.

Our Guitar Tuner also gives you the option to set a note to repeat automatically or you can use a virtual pick for a more fluid effect.

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Tune Your Guitar Here


How do I tune a guitar?

  1. Find a comfortable position. Hold the guitar in your lap in a comfortable playing position.
  2. Identify each tuning key. Follow each string up to its tuning key on the headstock of the guitar. Tightening a string raises its pitch, while loosening it makes the pitch lower.
  3. Tune from left to right. Start by tuning the low E string on the left of our Guitar Tuner and tune each string to the right. Because the low E string is the thickest, it should hold tune the best.
  4. Low E string. Click the low E string on our Tuner to hear the correct pitch, then match the pitch of your E string to the sound from our Tuner.
  5. A string. Use the A string on our Tuner as before, or match your A string to the sound of your E string at the fifth fret.
  6. D & G strings. Use our Tuner for each of these strings, or match each string to the sound of the string above it at the fifth fret.
  7. B string. Use the B string on our Tuner, or match your B string to the sound of your G string at the fourth fret.
  8. High E string. Finally, use the high E string on our Tuner, or match your E string to the sound of your B string at the fifth fret.
  9. Test some chords. Check that the strings sound in tune by playing a few chords.
  10. Retune if necessary. Guitars can flex a little during the tuning process, so you may need to run through these steps a couple of times until all the strings are in tune.