GuitarTool

FREE ONLINE TUNER

Free Online Guitar & Ukulele Tuner

Allow microphone access to see the nearest note, live frequency and cents offset. Audio is never saved or uploaded.

440 Hz±50 centsMicrophone audio is analyzed only in this browser. It is not saved or sent to a server.

Pluck one string

— Hz
−500+50
Pluck one string
A4 = 440 Hz

Microphone audio is analyzed only in this browser. It is not saved or sent to a server.

01 · PITCH

Three steps to a stable reading

  1. 01

    Pluck one string at a time and mute the others to reduce sympathetic vibration.

  2. 02

    Use a moderate attack, then read the pitch after the first transient settles.

  3. 03

    Bring cents close to zero and make a second pass across every string.

GuitarTool · iPhone · iPad

Download the full offline tuner

Download the full offline tuner