Guitar Tuner

Chromatic tuner powered by the Web Audio API — no audio leaves your device.

Allow microphone access. Pluck one string at a time. The upgraded MPM detector isolates guitar frequencies and ignores background noise for professional accuracy.

Detected note

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Flat—Sharp

Green within ±5¢ · aim for the center line

Nearest open string (standard tuning)

6: E25: A24: D33: G32: B31: E4