Online tuner

Tune any acoustic or electric instrument right from your browser, using your computer or phone microphone. No installation needed.

NOTA DETECTADA

How to use the tuner

  1. Press “Start microphone” and allow access when your browser asks.
  2. Play a sustained note or string near the microphone, ideally without much background noise.
  3. The needle centers and turns cyan once the note is in tune within ±5 cents.
  4. If it leans amber to the left the note is flat; to the right, it's sharp.