MP4 to MP3 Converter
Save the audio from a video as an MP3: music, a lecture, a podcast recording or a voice note. Works with MP4, MOV, WebM, MKV and most other video files.
Free · No sign-up · Files stay on your device
How to use MP4 to MP3
- 1Choose a video file.
- 2Click "Convert to MP3".
- 3Download the MP3.
Features
- Works with MP4, MOV, WebM, MKV, AVI and more
- High-quality MP3 (LAME VBR)
- Fast: only the audio is processed
- No upload, no sign-up
- Free with no watermark
High-quality MP3
Audio is encoded with the LAME MP3 encoder at a high variable bitrate (around 190 kbps), which sounds transparent for most music and speech while keeping files small.
Private, in-browser processing
This tool uses FFmpeg, the open-source engine behind most professional video software, running inside your browser. The first time you use it, the engine (about 30 MB) is downloaded once and then cached, so later conversions start straight away.
Frequently asked questions
Are my files uploaded?
No. Processing happens on your device with FFmpeg compiled to WebAssembly, so your video and audio never leave your computer or phone.
Can I extract audio as WAV or M4A instead?
Yes. Use the Extract Audio from Video tool, which lets you choose MP3, M4A or WAV.
Is it legal to convert videos to MP3?
Converting files you own or have permission to use is fine. Do not use it to copy copyrighted content you have no right to.