Online 12 String Guitar Tuner

Use this free online 12 string guitar tuner to tune up your guitar. This is for the standard eEaAdDgGBBEE 12 String Guitar tuning. A 12 string guitar is split up into 6 pairs of 2 strings. The thicker string of the pair is tuned to the same note and octave as a regular 6 string guitar. The thinner string, on the pair of strings 3-6, is tuned one octave higher than its pair. On the first and second pairs, the notes are the same octave and each string in the pair should sound exactly the same to its other string in the pair. This is eEaAdDgGBBEE tuning. The lowercase letters means that it is one octave higher then its counterpart.

ALERT Sorry, your web browser does not support Adobe Flash or does not have it installed. Most Apple products do not support Flash. Please use our HTML5 Guitar Tuner that will work with almost all modern browsers.

Alternate Tunings

If you need a different tuning then, check out our adjustable guitar tuner, and select the tuning you want and then tune the thicker strings it like you would a 6 string guitar and ignore the smaller string of the pair. Once you've done that, go back and tune the thinner strings 1 octave higher to whatever the notes is on the thicker string. Do this with all the strings except on the 1st and 2nd pair. Like we mentioned earlier, the first and second pair of strings are the same octave so just tune it to the exact note of its other string in the pair.

Get-Tuned's Tuner App
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Comments (34)
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like its being said what is octave higher on a tuner

by Tony Mc on

Thanks! Really helpful and fast! Guitar Tuna only tunes six string guitars, I was frustrated but you really came thru!
All the best!

by Rox on

This is perfect. What a great tool this site is. Kudos to you!

by Ian A. Fraser on


wow gay

by Josh Robinson on

Thanks for the EZ Tuner...very helpful!!...Makes tuning a 12 String a breeze

by michael mcguire on

Wonderful thanks. I have shared your site on facebook. Helpful indeed.

by Sam on


by Mac on


Great tuner, not the easiest instruments to tune properly but tuner is brilliant. Thanks

by Chris jones on

I tune my 12 string to standard "C" and am worried this is too tight and may bend the neck. Is there a problem tuning it down
and what note should I use on my Tuner ?

by Tony on

Looking for a free plectrum (4 string) tuner. Thanks

by Gary crawley on

brilliant, makes life easy

by jt on


Thanks a ton man. It was very helpful. :-)

by Fae on

awesome great site

by gilbert on

just got my 12 string thanks tuner awesome keep jamin rock on

by rob on

Great tuner, sure takes the guess work out of tuning. Makes it a whole lot easier to tune.

by arkcop249 on

Thank you!

by Will on

Dear lord I have been through so many sites now. I just got a 12 string guitar everyone is saying the same the thing not one is telling what it means practically. What do you have to do to make it an octave higher. I use a chromatic tuner I tune my guitar to EADGBE what in the heck is an octave higher if you're tuning with a tuner if the top string is E what do you tune the second string to?

by lesley on

Now I can check the tuning every day. What a great idea to put it out there for people to use.
Thanks a lot.

by papi on

such a time saving device, thanks so much!

by Steve on

thanks for this great tuner. it saves so much time and hassle.

by John Connolly on
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