Detect pitch with your microphone and see instantly whether you are sharp or flat — tune in seconds.
The tuner needs HTTPS (or localhost) to use your microphone. Click a string to hear its reference pitch.
For security, browsers only allow web pages to use the microphone in a secure context such as HTTPS or localhost.
Use a quiet room, move the guitar close to the microphone, pluck only one string at a time and wait for the reading to settle.
A4 is the standard pitch reference, 440 Hz by default. You can adjust it when playing with other instruments.
It detects pitch based on equal temperament, so ukulele, bass and other string instruments work too.
No. Audio is analysed locally in your browser and is never uploaded or stored.
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