Audio tool

Change audio pitch

Make a voice deeper or higher without changing how fast it plays.

Change audio pitch Runs on your device

Drop files here or click to browse

One audio file

Never uploaded

Runs on your device — the file is never sent anywhere
No sign-up, no watermarks, no daily quotas
Free, with no limit on how often you use it

How it works

Shifting pitch without changing speed is what separates a voice changer from simply playing a recording fast. It is used to disguise a voice, to move a backing track into a singable key, and to make a narration sit better against music.

Semitones, not percentages

Pitch is measured in semitones because that is how music works: twelve semitones is exactly one octave, a doubling or halving of frequency. Two semitones is a subtle shift; four is clearly a different voice; twelve is dramatic and obviously processed.

How it works, and why it is not perfect

The audio is resampled to move the pitch, which also changes the speed, and then time-stretched back to the original duration. That second step is an approximation, so large shifts introduce a warbling artefact on sustained sounds. Small shifts are essentially clean.

Disguising a voice

A shift of four to seven semitones changes a voice recognisably, but it is not anonymisation — the rhythm, accent and phrasing survive, and the shift can be reversed by anyone who applies the opposite amount. Treat it as a disguise, not as protection.

Music

Shifting a whole track moves it to a different key while keeping the tempo, which is the point for singers and for matching two pieces of music. Beyond a few semitones instruments start to sound artificial.

FAQ