TuneUniversal
Online 12-string guitar tuner
Tune 12-string guitar online with your microphone. Reference notes: Mi - Mi - La - La - Re - Re - Sol - Sol - Si - Si - Mi - Mi.
Digital tuner
Lock selected stringRecommended: choose a string and the tuner stays on that target.
Reference tone
Mi3 / 164.81 Hz
All-string check
Strum all open strings once to see which strings are out of tune.
FlatIn tuneSharp
Detected note
--
Frequency--
Cents--
TargetMi3
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12-string guitar Standard octave pairs Strings: Mi - Mi - La - La - Re - Re - Sol - Sol - Si - Si - Mi - Mi
+/-5 cents = In tune
Move the instrument closer to the microphone.
Play one open string and let it ring.
Use Manual mode in noisy rooms.
How it works
- Select 12-string guitar in the tuner.
- Allow microphone access.
- Play one string or note at a time.
- Tune until the indicator is centered.
FAQ
Does the 12-string guitar tuner work on mobile?
Yes. Open TuneUniversal in your browser and allow microphone access.
Which reference notes are included?
This tuner page uses these reference notes: Mi - Mi - La - La - Re - Re - Sol - Sol - Si - Si - Mi - Mi.