MP4 to MP3 Converter

Extract the audio track from MP4 videos and save it as MP3 - entirely in your browser.

No upload

Entirely localYour files never leave your device.

Only convert content you are allowed to use.

No MP4 file selected yet.

MP3 is lossy. A higher bitrate cannot restore details missing from the source.

Quality profile

Estimated output size: 0 B

The actual size may differ.

Overall progress0%

How it works

Step by step

1
Add MP4 files
Drag one or more MP4 files into the drop area or choose them from your device.
2
Choose quality and clip
Choose an MP3 preset, an audio track if needed, and optionally a time range.
3
Convert locally
The worker loads the MP3 encoder only when conversion starts and creates the MP3 without uploads.

MP4 and MP3 data is processed only on your device and is never uploaded.

Video, subtitle, and data tracks are discarded; only the selected audio track is encoded as MP3.

Use presets for speech, standard, and high quality, or choose bitrate, channels, and sample rate yourself.

Download finished MP3s individually or bundle multiple results into a ZIP file.

Are my MP4 files uploaded?

No. Analysis and conversion run locally in the browser and worker.

Does the audio lose quality?

Usually yes. MP3 is lossy and the audio track is encoded again.