Online Tuner: Guitar, Bass Guitar & Ukulele Tuner

I need your help (I really do)

🎸 Here's a free and simple online instrument tuner that you can use to tune an electric guitar, acoustic guitar, bass guitar or a ukulele.

Just click on the Start Tuner button to initiate microphone access and you're ready to start tuning your instrument!

Not sure how to use the tuner? Read here for simple instructions.

Also check out the tool for guitar scales, guitar chords and the virtual guitar fretboard.

🎙️ If you want to tune a different instrument, check out the chromatic tuner or, for your voice, check out the voice tuner.

Acoustic Guitar

Electric Guitar

Bass Guitar

Ukulele

👂 Listening for a 1st clear pitch...

Tuning: →

How to use this online guitar, bass guitar and ukulele tuner

This free online guitar and ukulele tuner makes it easy to play the different strings on your instrument and adjust their tuning so that they sound just right.

The tuner uses your device's microphone, so the clearer the sound the better. Try to tune your instrument in a quiet room and place your instrument close to your microphone. Start by activating the tuner using the Start Tuner button. This will trigger the browser to ask for permission to use your device's microphone.

Next, select your instrument between acoustic guitar, electric guitar, bass guitar or ukulele. Now play each string of your instrument and the indicator will tell you if that string is in tune, too low or too high. The tuner automatically detects which string you're playing.

The indicator turns green when the registered pitch is within 3 Hz of the correct pitch, and a green checkmark appears when the pitch is within 1 Hz of the correct pitch.