Convert MP4 to MP3
MP3 is already selected. Drop the MP4 and press Extract audio.
MP4 · MOV · WEBM · MKV → MP3 / M4A / WAV
Sent to server: 0 B
Requests made by this tool while processing · how to verify
- Requests that could carry data
- 0
- Engine downloads (code, models)
- 0
- Analytics pings (no file data)
- 0
Counted with the browser's Performance API during the last job. It sees every request the page makes, but not what is inside them, so anything that is not a static download is counted above.
To check yourself: open DevTools → Network, clear the list, run the tool, and inspect each request. None will contain your file. You can also switch to offline after the page loads; tools whose engine is already downloaded keep working.
PresetOutput: MP3
Drop file here
or paste, or choose a file
MP4 · MOV · WEBM · MKV → MP3 / M4A / WAV
Choose one video with sound: MP4, MOV, WebM or MKV, up to 2 GB.
How to convert MP4 to MP3
The audio track is decoded and re-encoded as a 192 kbps MP3 with the LAME encoder (compiled to WebAssembly and loaded the first time you use it). The video track is ignored. Drag the timeline handles to keep only part of it.
Step by step
- 01Drop the MP4.
- 02Optionally drag the handles to keep only part of the sound.
- 03Press Extract audio and download the MP3.
MP3 or M4A?
Most MP4s already carry AAC audio. Choosing M4A copies that track as-is: no quality loss and near-instant. Pick MP3 when a device or app only accepts MP3.
Questions
What bitrate is the MP3?
192 kbps, which is transparent for most listening.
Can I convert MOV or WebM too?
Yes: MP4, MOV, M4V, WebM and MKV.
Is my file uploaded?
No. The audio is encoded in your browser.