Online Tuner

Tune a guitar, ukulele, violin or your voice with your microphone. The line shows how the pitch moves: the pluck, the drift and the moment it settles.

  • Free
  • No ads
  • No sign-up
Demo signalA4 = 440 Hz
A2
+4 cents
110.3 Hz · demo
In tune
−50−250+25+50
Your pitch, last 8 sIn tune, ±5 cents

How to tune a guitar here

  1. Press “Use my microphone” and allow it.
  2. Pluck one string and let it ring.
  3. The line starts sharp, then settles. Tune by the settled part.
  4. Turn the peg until the line sits in the green band.

Questions

Why does the line jump up when I pluck?

A hard pluck stretches the string for a moment, so the note starts sharp and then settles. Tune by the steady part of the line.

What does A4 = 440 Hz mean?

It is the note the tuner measures against. Most bands use 440 Hz. Many orchestras tune a little higher, to 442 or 443 Hz.

Does it hear a quiet, fading string?

Yes. It measures how quiet your room is and listens down to just above that noise, so the line follows a note until it really fades.

Can I tune my voice?

Yes. Sing a long note and read the cents. To see a whole phrase, open the pitch monitor.