in-browser tool
Guitar tuner
Tune by ear or by needle. Pick an instrument, play one string at a time, and the needle shows exactly how far off you are in cents. Live mic pitch detection, all in your browser.
TUNER.
instrument
tuner
tuner
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-500+50
♭ flatsharp ♯
Tools ·
Instrument
Reference A
Tap, pick an instrument and play one string at a time
Accuracy depends on your mic and background noise. Play one note at a time.
How it works: allow microphone access, choose your instrument (or chromatic) and reference pitch, then play one string at a time. The big note and the needle show the detected pitch and how many cents sharp or flat you are; it turns green when you are in tune. Everything runs locally with the Web Audio API - nothing is recorded or uploaded.