Free Online Guitar Tuner — Tune Any Instrument in Seconds
Mic-based chromatic tuner for guitar, bass, ukulele, and violin. No download, no sign-up, works in your browser.
Instrument
Tuning
Start tuning
We'll ask for microphone access once. Audio is processed in your browser and never uploaded.
Browse by tuning
Land directly on a page tuned to your favourite alternate tuning.
- guitar · StandardE2 · A2 · D3 · G3 · B3 · E4
- bass · Standard 4-StringE1 · A1 · D2 · G2
- ukulele · Standard GCEAG4 · C4 · E4 · A4
- violin · Standard GDAEG3 · D4 · A4 · E5
- guitar · Drop DD2 · A2 · D3 · G3 · B3 · E4
- guitar · Drop CC2 · G2 · C3 · F3 · A3 · D4
- guitar · DADGADD2 · A2 · D3 · G3 · A3 · D4
- guitar · Open GD2 · G2 · D3 · G3 · B3 · D4
- guitar · Open DD2 · A2 · D3 · F#3 · A3 · D4
- guitar · Eb StandardEb2 · Ab2 · Db3 · Gb3 · Bb3 · Eb4
- guitar · 7-String StandardB1 · E2 · A2 · D3 · G3 · B3 · E4
- guitar · BaritoneB1 · E2 · A2 · D3 · F#3 · B3