All tools / Video / MP4 to MP3
Convert MP4 to MP3
Convert MP4 to MP3 on your device. Extract audio without uploading the video.
Drop your .mp4 here
or click to browse
TO
Processed on your device - nothing is uploaded.
HOW IT WORKS
1
Drop the mp4 video
Drag the MP4 file in. Your browser reads it locally - its contents stay on your device.
2
Pick MP3
The audio track is extracted and encoded as MP3 right here.
3
Download the audio
Your MP3 saves to your device, ready for any player.
Why convert here, not there
No upload, ever
The mp4 never touches a server; its soundtrack becomes a mp3 inside this tab.
Local conversion
There is no file-upload step. Click Convert to extract audio after the converter engine has loaded.
No account, no daily cap
No per-day limit, no account, no watermark on your mp3.
The two formats, briefly
| MP4 | MP4 is a container. This converter writes H.264 video and AAC audio when an audio track is present; target-player support still needs checking. | |
|---|---|---|
| MP3 | MP3 is a lossy audio format. This converter encodes it at the selected bitrate rather than copying the original audio stream. | |
When you need this
- Extract the soundtrack from a MP4 video for an audio-only workflow that accepts MP3. This does not keep the picture. A video with no audio track cannot produce meaningful audio.
MP4 vs MP3: what changes
| MP4 | MP3 | |
|---|---|---|
| Kind | Video | Audio |
| Compression | Depends on source encoding | Lossy audio |
| Typical size | Depends on the file and encoding settings. | Measure the exported file; it may be larger. |
| Opens on | Check the source in your app and browser. | Check the downloaded file in the receiving app. |
| Best for | Keep the original as your source. | MP3 workflows, subject to the limits below. |
Keep the original. Compare the exported file before sharing or replacing it.
Good to know
- The audio bitrate choices are 128, 192, 256 and 320 kbps, with 192 kbps as the default. Lower bitrates usually reduce size but can make loss more audible.
- First use downloads the audio/video engine (about 30 MB). The input cap is 2 GB, but available browser memory can run out below that.
MP4 to MP3, answered
Why convert MP4 to MP3?+
Extract the soundtrack from a MP4 video for an audio-only workflow that accepts MP3. This does not keep the picture. A video with no audio track cannot produce meaningful audio.
Which quality should I pick?+
The audio bitrate choices are 128, 192, 256 and 320 kbps, with 192 kbps as the default. Lower bitrates usually reduce size but can make loss more audible.
Does converting MP4 to MP3 lose quality?+
This export uses lossy audio encoding. The source MP4 may contain different codecs or recording quality; re-encoding cannot improve the original. Compare the result before deleting the source.
Is there a file size limit?+
The hard cap is 2 GB per file. The practical limit is your device: conversion runs in its memory, so very large files can fail on phones with little free RAM. There is no server-side cap because nothing is uploaded.
Does my file get uploaded anywhere?+
No upload, full stop. Everything between dropping the file and downloading the mp3 happens in your browser.