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Audio speed

Tempo from 0.5× to 2×, pitch preserved.

Drop files here
or click to browse - files stay on your device
Max file size: 300 MB

About this tool

Speed up or slow down audio without changing the pitch. Handy for podcasts, language practice and sound design.

Features

  • 0.5×-2× range without pitch shift
  • Optional pitch-preserving resampling
  • Works on MP3, WAV, M4A and more
  • Runs locally in your browser

How to use it

  1. Drop in an audio file.
  2. Choose a speed multiplier.
  3. Click Apply and download.
🔒 100% private

Everything happens inside your browser using JavaScript and WebAssembly. Your files are never uploaded to a server, never stored, and never seen by us.

Frequently asked questions

Does the voice sound chipmunky?

No - we use the atempo filter which changes tempo while preserving pitch.