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.

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Comments (64)
Pages | 1 2 3 4


The best.

by Z on

Helpful site

Needed something to help me tune my Fender Acoustic Guitar and this did the trick. Thanks muchly

by Chuck Taylor on

when I play my song is gone I tuner I can't found my song.

by Leridieu Pierre on

Good reccos

by Bear on

Good reccos

by Bear on

is this tuner available for download? I love it, but i dont always have a live internet connection

by JOE on

how do you access the 12 string tuner

by Pat on

is this a game

by Pat on

Excellent tuning !

by Massimo on

Paul(UK) I was thinking the same thing. All you would need is an oscilloscope and it would be even more accurate.

by AndyF on

12-string various tuning

hi Folks, very helpfull Guitar tuner, also for open Tunings D or G,if want Play with Bottlenek sliding, also Banjo and Mandolin tuner i placed to my Favorites H.B.

by Henry on

Great tuner for my Guild 12

by PeterW on

This is a great way to tune my 12 string Martin. I depend on this tuner. Thank You

by Donald Bonnar on


This is inspensible for tuning my 12 string that I cal "The Beast"

by bob on


This is inspensible for tuning my 12 string that I cal "The Beast"

by bob on

Thank you!!!!! A great tuner for my Martin D12-28. I have tried Clip-on and Strobe tuners.Have not found one that tunes like your online tuner.

by JWK on

What a joy to use. Thank you!

by JWK on

Thank you for such a wonderful gift

by Bob on


It seems when I tune one string it throwss of others
I want to use 12 sing one ful se own with a capo on fret 2

Bob Mullany 630780 9003

by Bob Mullany on

I find it so much easier to use this tuner on my 12 string. What a great help

by Don Bonnar on
Pages | 1 2 3 4
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