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Reverse audio

Drop any audio file — get an MP3 that plays backwards.

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

About this tool

Play any audio file backwards. Useful for sound design, finding hidden messages or just for fun.

Features

  • Reverses audio sample-by-sample
  • Supports common formats
  • No quality loss for lossless inputs
  • Browser-only

How to use it

  1. Upload an audio file.
  2. Click Reverse.
  3. Download the reversed file.
🔒 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

Will it work on long files?

Yes, but very long files use more memory because the entire stream is loaded for reversal.