Tune your guitar by ear with your microphone — accurate to the cent, right in your browser. No app, no sign-up. Supports standard E, Drop D, Eb, D standard, Drop C, Open G/D, DADGAD and bass tunings.
Allow microphone access, pick your tuning, then play one open string at a time. The tuner detects the pitch and shows the nearest target note with a needle: turn the tuning peg until the needle centres and turns green (within ±5 cents). For best accuracy play in a quiet room and let each string ring.
Standard tuning, low to high, is E2 · A2 · D3 · G3 · B3 · E4. From there you can drop to Drop D (low string to D), tune down a semitone to Eb/half-step, or use alternate tunings like Drop C, Open G, Open D and DADGAD — all selectable above. Bass tunings are included too.
Your audio never leaves your device — the pitch is detected locally in your browser and nothing is recorded or uploaded. When you're in tune, plug in and play real songs →
Quick guides + presets: Drop D tuner · Eb / half-step tuner · DADGAD tuner · Bass tuner · Drop D bass tuner · Drop C bass tuner.
Yes — it's 100% free, with no sign-up, download or app. It runs entirely in your browser.
Yes. The tuner listens to your guitar through your device's microphone (or an audio interface). Allow mic access when prompted. Nothing is recorded — the pitch is analysed locally.
Standard E, Drop D, Eb/half-step down, D standard, Drop C, Open G, Open D, DADGAD and bass tunings — pick one from the selector and the tuner targets those notes.
It detects pitch to within a few cents and shows a needle; it turns green when you're within ±5 cents of the target note.
Yes, it works in mobile browsers. For the lowest latency on any device, use an audio interface rather than the built-in mic.
Looking to keep time too? Try the free online metronome →