Tune any instrument with real-time pitch detection. Pluck a string, play a note — the tuner shows the note, octave and how many cents sharp or flat you are.
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Play a note to begin
-50 ← FLATIN TUNESHARP → +50
🎧 How to tune your instrument
Click Start tuner and allow microphone access when the browser asks.
Pluck one string at a time and let the note ring out for a couple of seconds.
Watch the needle: if it points left, tune up (tighten). If it points right, tune down (loosen).
Aim for the center — the needle turns green and the cents display reads 0.
Tip: use the Guitar / Violin / Ukulele presets to highlight the string you are tuning.
🎧 Chromatic support
Detects all 12 notes of the octave — perfect for any instrument.
📎 Cents precision
The needle shows flat/sharp deviation in cents so you can tune exactly.
🎼 String presets
Guitar, violin and ukulele presets highlight the string you are tuning.
🔒 Works offline
Once loaded, pitch detection runs entirely in your browser.
More music tools
Generate tones, test your microphone or keep rhythm with a metronome.