What happens with the microphone?

The tuner listens on your device while it's on; the sound isn't recorded or sent. Press Stop and the microphone is released.

Does it work offline?

Yes. Once this page has loaded, it keeps working without an internet connection.

Within about a cent for a clear, steady note. Pluck one string at a time, close to the microphone, and away from other noise.

Tune any instrument with your microphone: the note, how many cents sharp or flat, and a needle that settles when you're in tune.

What happens with the microphone?: The tuner listens on your device while it's on; the sound isn't recorded or sent. Press Stop and the microphone is released.
Does it work offline?: Yes. Once this page has loaded, it keeps working without an internet connection.
How accurate is the tuner?: Within about a cent for a clear, steady note. Pluck one string at a time, close to the microphone, and away from other noise.

Ready-made settings for common jobs.

More tools for tuning, timing and practice.

BPM, time signatures

Drum machine, loops

Find a song's BPM

Any frequency or note

Diagrams in every key