MP4 to MP3 Converter

Drop one or many MP4 files, pick a bitrate and download MP3s. The audio is decoded and encoded on your device — the video never leaves it.

How to use it

  1. Drop one or more MP4 files. MP3 is already selected.
  2. Pick the bitrate: 128 kb/s for speech, 192 kb/s for most music, 320 kb/s for archives.
  3. Click Start.
  4. Download the MP3s one by one, or Download all.

Frequently asked questions

Which MP3 bitrate should I use?

192 kb/s is transparent for most listeners and keeps files small; choose 320 kb/s for music archives and 128 kb/s for speech and podcasts.

Is there a faster option without quality loss?

Yes — use “Extract audio” with M4A. It copies the AAC soundtrack of an MP4 unchanged, which takes seconds and keeps the exact original quality.

Is my video uploaded to a server?

No. The file is read and written inside your browser tab using WebCodecs — nothing is uploaded, there is no account and no watermark. Once loaded, the page also works offline.