MP4 to MP3
Extract the complete audio track from an MP4 and encode it as a 128–320 kbps MP3 locally with FFmpeg WebAssembly.
Extract MP3 audio from MP4
Choose an MP4 and bitrate. The complete audio track is encoded locally with FFmpeg WASM.
How to use MP4 to MP3
- 1
Choose an MP4
Select or drop an MP4 up to 300 MB.
- 2
Choose MP3 quality
Select 128, 192, 256, or 320 kbps. Higher bitrates create larger files.
- 3
Convert locally
Start conversion and keep this tab open while FFmpeg WebAssembly extracts the full audio track.
- 4
Download the MP3
Preview the result and save it to your device.
About MP4 to MP3
Extract the complete audio track from an MP4 and encode it as a 128–320 kbps MP3 locally with FFmpeg WebAssembly.
Use MP4 to MP3 when you need to extract audio from video. Review the available options in the interface, process your input, and check the result before saving or copying it.
Frequently asked questions
No. The file is read and converted entirely inside this browser tab.
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