GuitarTuner.online

12-String Guitar tuner — Open D

D-D-A-A-D-D-F#-F#-A-A-D-D · Open

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Microphone off
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This free online tuner listens through your microphone and shows how close each string of your 12-String Guitar is to Open D tuning (D-D-A-A-D-D-F#-F#-A-A-D-D). Play a string, watch the needle, and turn the peg until the meter glows green. If you prefer tuning by ear, tap any string card to hear its reference tone.

Other 12-String Guitar tunings

Standard

Standard E-E-A-A-D-D-G-G-B-B-E-EHalf Step Down D#-D#-G#-G#-C#-C#-F#-F#-A#-A#-D#-D#Whole Step Down D-D-G-G-C-C-F-F-A-A-D-D

Drop

Drop D D-D-A-A-D-D-G-G-B-B-E-EDouble Drop D D-D-A-A-D-D-G-G-B-B-D-DDrop C C-C-G-G-C-C-F-F-A-A-D-DDrop C# C#-C#-G#-G#-C#-C#-F#-F#-A#-A#-D#-D#Drop B B-B-F#-F#-B-B-E-E-G#-G#-C#-C#Drop A A-A-E-E-A-A-D-D-F#-F#-B-B

Modal

D Modal D-D-A-A-D-D-G-G-A-A-D-D

Open

Open C C-C-G-G-C-C-G-G-C-C-E-EOpen D D-D-A-A-D-D-F#-F#-A-A-D-DOpen E E-E-B-B-E-E-G#-G#-B-B-E-EOpen G D-D-G-G-D-D-G-G-B-B-D-D

Chords for this tuning

CGDAEFAll 12-String Guitar chords →
How do I tune my 12-String Guitar to Open D?

Allow microphone access, pluck a string, and the tuner will detect it automatically. The needle shows whether the string is flat or sharp — adjust until the reading is within ±5 cents (D-D-A-A-D-D-F#-F#-A-A-D-D).

Which notes are used in Open D tuning?

Open D tuning for 12-String Guitar uses the notes D-D-A-A-D-D-F#-F#-A-A-D-D, listed from the lowest string to the highest.

Can I tune without a microphone?

Yes. Every string card plays a reference tone — tap it and match your string to the sound by ear.