12-String Guitar tuner — Whole Step Down
D-D-G-G-C-C-F-F-A-A-D-D · Standard
This free online tuner listens through your microphone and shows how close each string of your 12-String Guitar is to Whole Step Down tuning (D-D-G-G-C-C-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
Drop
Chords for this tuning
How do I tune my 12-String Guitar to Whole Step Down?
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-G-G-C-C-F-F-A-A-D-D).
Which notes are used in Whole Step Down tuning?
Whole Step Down tuning for 12-String Guitar uses the notes D-D-G-G-C-C-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.