FREE, NO UPLOAD

Convert MP3 to WAV

Runs locally in your browser via a WebAssembly build of ffmpeg. Your file is never sent to a server.

  1. Choose a .mp3 file from your device.
  2. Click convert to WAV.
  3. Download the result.

Maximum file size: 100 MB. The first conversion loads a ~30 MB converter engine, once per visit. Nothing is uploaded - conversion runs on your device.

MP3 vs WAV

MP3 is the universal compressed audio format, supported by essentially every device and app. WAV is an uncompressed format used for editing and mastering, at the cost of a much larger file size.

Frequently asked

Why convert MP3 to WAV?

MP3 is the universal compressed audio format, supported by essentially every device and app. WAV is an uncompressed format used for editing and mastering, at the cost of a much larger file size. Converting between them is common when a file made for one use needs to work for the other.

Does this upload my file anywhere?

No. Conversion runs entirely on your device using a WebAssembly build of ffmpeg - the file never reaches a server.

Is there a file size limit?

Yes, 100 MB per file, to keep conversion reliable inside the browser.

Koldflux exports every clip in the right format automatically - no manual conversion step.

Automate this in Koldflux