0
A4
440

Use a microphone or plug your instrument directly into mic-input.

The standard way for measuring note distance is by cents. You can also use hertz (hit to change).

Standard guitar tuning:

E282.41
A2110.00
D3146.83
G3196.00
B3246.94
E4329.63

This app is built on new, not yet standardized, open web technology. It is currently not supported in IE and Safari.

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