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Online chromatic tuner

Press Start, allow the microphone and play one note at a time. The needle shows how far you are from the nearest note, and green means in tune. It works for any instrument and for your voice.

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Press Start and play one note at a time.

Song on YouTube or Spotify? The free Chrome extension reads any tab: key, BPM and chords over the video, plus key and speed changes. New installs get 7 days of Pro free. See the extension

How to use it

Online chromatic tuner

  1. Allow the microphone

    Your browser asks once. The sound stays on your device: nothing is recorded or sent.

  2. Play one note

    Pluck one string or sing one note and let it ring. Its name appears in the middle of the dial.

  3. Turn until it’s green

    Left of centre the note is flat, so tighten the string. Right of centre it is sharp, so loosen it.

Standard tunings

Guitar, from the thickest string: E2 A2 D3 G3 B3 E4. Bass: E1 A1 D2 G2. Ukulele: G4 C4 E4 A4. Violin: G3 D4 A4 E5.

Most music is tuned to A = 440 Hz. Some orchestras use 442 or 443, and some recordings sit a little off. The analyzer tells you the tuning of a recording so you can match it here.

More tools

Free tools for musicians

They all run in your browser, on your computer or your phone, with nothing to install.

Key and BPM analyzerKey, Camelot code and BPM of your audio files.Tap BPMTap the beat and get the tempo in four taps.Metronome30 to 300 BPM, accented first beat, 2 to 6 beats per bar.Chord transposerMove a song to any key and rewrite its chords.Camelot wheelWhich keys mix well, for DJs and producers.TunerChromatic tuner for any instrument or your voice.

FAQ

Questions

Is anything recorded?

No. The tuner reads the microphone inside your browser, never sends the sound anywhere and closes the microphone when you stop or leave the page.

Why doesn’t it detect my note?

Play one note at a time, close to the microphone, and let it ring. Chords and noisy rooms confuse any tuner.

Can I tune to 432 Hz?

Yes. Change the reference under the dial and the note and the needle use it straight away.

Does it work on a phone?

Yes, in Chrome and Safari on Android and iPhone. The first time, allow the microphone in the browser’s prompt.