Online Bass Tuner

Tune all four strings of your bass with your device's microphone: the tuner detects the note and shows whether you're flat, sharp or in tune.

Your files never leave your device. Everything is processed in your browser.

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Tap «Turn on the microphone» to start

Turn on the microphone, play an open string and wait for the needle to settle in the center. Hold the instrument close to the microphone and avoid background noise.

How to tune your bass

  1. The Bass instrument is already selected: tap «Turn on the microphone» and accept the permission.
  2. Play an open string and let it ring.
  3. Watch the needle: on the left you need to tune up, on the right you need to tune down.
  4. When «In tune!» appears, move on to the next string.

Bass tuning

The four-string bass is tuned E, A, D, G (E1 A1 D2 G2), one octave lower than the four low strings of a guitar. These are very low notes and take a moment longer to detect.

The sound is analyzed on your device and is never recorded or sent.

Good to know

Frequently asked questions

How do you tune a 4-string bass?

E, A, D, G, from the lowest to the highest (E1 A1 D2 G2).

Does it work for 5-string basses?

Yes, with the chromatic mode: it detects any note, including the low B string.

Is what I play recorded?

No, the sound is analyzed instantly and isn't saved.