Tune your guitar, bass or violin
A precise tuner for guitar, bass, ukulele, violin and more: it listens through the microphone and shows how many cents each string is off. With alternate tunings, any A4, reference tones and a metronome.
Tuner
Settings
Built-in microphone, a USB audio interface or an iRig for an electric guitar. The full list appears once the microphone is allowed.
Mode
Display
Concert pitch A4
When a string is in tune
Hold the note inside ±3 cents for half a second: the card lights up green, the string gets a tick, and the next string is suggested.
Reference tone
Press the speaker next to a string to hear its note for a few seconds, tuned to your A4. Press again to stop.
Keys: Space start or stop, 1–8 pick a string, A automatic, P reference tone.
Metronome
Shares the sound with the tunerTap a beat to change it: accent, normal or silent.
Tuning log
Your sound stays here. The microphone signal is analysed in this browser, a few times a second, and immediately forgotten: nothing is recorded, uploaded or sent anywhere, and the page makes no outside requests. Once opened, TuneBench also works offline.