Mandolin tuner — Open G (GDGD)
G-G-D-D-G-G-D-D · Open
—3
Microphone off
··· Hz
This free online tuner listens through your microphone and shows how close each string of your Mandolin is to Open G (GDGD) tuning (G-G-D-D-G-G-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 Mandolin tunings
Standard
Chords for this tuning
How do I tune my Mandolin to Open G (GDGD)?
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 (G-G-D-D-G-G-D-D).
Which notes are used in Open G (GDGD) tuning?
Open G (GDGD) tuning for Mandolin uses the notes G-G-D-D-G-G-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.