MP4 to MP3 Converter
Extract the audio from MP4 videos and save it as MP3. Choose the quality you need.
- ✓ Free
- ✓ No sign-up
- ✓ No upload
Drag a file here or choose one
Accepted: MP4, MOV · Max 500 MB per file · up to 5 files at once
Every conversion runs inside your browser.Files are never uploaded to or stored on a server.
How to use MP4 to MP3
- 1Choose or drop your MP4 files.
- 2Adjust the settings if you like — the defaults work for most files.
- 3Click Convert.
- 4Download the result. Your files stay on your device the whole time.
MP4 to MP3: tool facts
| Accepted files | MP4, MOV |
|---|---|
| Output | MP3 |
| Max file size | 500 MB |
| Files at once | 5 |
| Where files are processed | In your browser — files are never uploaded |
| Conversion engine | FFmpeg (ffmpeg.wasm, WebAssembly) |
| Price | Free, no sign-up |
MP4 vs MP3 at a glance
| MP4 | MP3 | |
|---|---|---|
| Full name | MPEG-4 video | MPEG audio layer III |
| Developed by | MPEG (ISO/IEC 14496-14) | Fraunhofer IIS and MPEG |
| First released | 2001 | 1993 |
| File extensions | .mp4, .m4v | .mp3 |
| MIME type | video/mp4 | audio/mpeg |
| Compression | Lossy | Lossy |
Facts checked on 2026-10-10.
Frequently asked questions
What is MP4?
MP4 is the most compatible video format. It plays on phones, computers, TVs and every major website, usually with H.264 video and AAC audio.
What is MP3?
MP3 is the universal audio format. It plays on every phone, car stereo and music player, and keeps files small with lossy compression.
What's the difference between MP4 and MP3?
MP4 is a video file, while MP3 contains audio only — useful for music, podcasts and voice recordings.
Is it safe to convert my files here?
Yes. The conversion runs inside your browser, so your files are never uploaded to a server. Close the tab and nothing remains.
Are there any limits?
It's free with no sign-up. Each file can be up to 500 MB, and you can convert up to 5 files at once.