12NOTEZ · Free Tool
Tune your banjo with your mic — Open G — g D G B D (5-string). Free, accurate, private.
Your audio never leaves your device — detection runs entirely in your browser.
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A 5-string banjo is usually in Open G: g D G B D. The short 5th string is a high g (a drone), and the remaining four form a G chord — strum open and you get G major.
G4D3G3B3D4
| Tuning | Notes |
|---|---|
| Double C | g C G C D — old-time clawhammer favourite |
| Sawmill (G modal) | g D G C D — droning, modal old-time sound |
| Drop C | g C G B D — lower 4th string for key of C |
Switch the instrument selector above to chromatic mode to tune to any of these notes by ear.
Standard banjo tuning is Open G — g D G B D (5-string) — strings G4, D3, G3, B3, D4 from lowest to highest.
Allow mic access and play the short 5th string — match the high g4 drone. Tune the 4th string D3, 3rd G3, 2nd B3 and 1st D4. Match each string to the needle until it reads in-tune (green).
From low to high, the strings are G4, D3, G3, B3, D4.
Yes — this tuner uses your device microphone with cents-precise pitch detection, runs entirely in your browser, and your audio never leaves your device.
Prefer to set tempo instead? Try the free online metronome, or find any song's key in our database.