Reference pitch

440 Hz tuner

Tune online with a chromatic tuner that opens with A4 set to 440 Hz, so you can match ensembles, recordings, or your preferred reference pitch.

How to tune at 440 Hz

Play one note at a time and watch the tuner center the pitch against an A4 reference of 440 Hz.

You can stay in chromatic mode or switch to an instrument preset after the page loads if you want faster string-by-string tuning.

440 Hz tuner FAQ

What does 440 Hz mean on a tuner?

It sets the A4 reference pitch used to calculate every other note, which changes where the tuner considers the center of each pitch.

Can I change the reference pitch after this page loads?

Yes. This page starts at 440 Hz, but you can change the reference pitch in the tuner settings at any time.

Why would I tune to 440 Hz?

Different players, ensembles, and recordings sometimes use different A4 references. This page helps you start at 440 Hz right away.

Go further with Soundbrenner

Need more practice tools after tuning? Explore the full Soundbrenner app for metronome, practice workflows, and a richer mobile setup.

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