About Guitar Tuner
Turn on the mic and play a string; when the needle is centred, the string is in tune.
Every tool runs on the browser's Web Audio engine: the metronome is scheduled on the sound card's clock, and the tuner analyses your microphone input on your device. Audio is never recorded or uploaded.
How to use Guitar Tuner
- Open the toolNo download or sign-up needed.
- Set it upPick a tempo, tuning, sound or frequency.
- PlayPress start; allow microphone access to tune.
Frequently asked questions
Is Guitar Tuner free?
Yes, completely free with no sign-up.
Does it work on phones?
Yes, in Android and iPhone browsers. Tuning needs microphone permission.
Is my audio recorded?
No. Microphone audio is only analysed live on your device.