How to use it
- Drop your MP4 files into the box above or click “Choose files”.
- Adjust the options if you need to.
- Click “Convert to MP3” and download the result.
About the format
MP4 is the most common video format on phones and cameras. The converter takes its audio track and encodes it to MP3, which plays in any player, car stereo and phone.
Frequently asked questions
Which audio quality should I choose?
192 kbps is a good default for music and voice. Choose 256–320 kbps for the best quality, or 128 kbps for the smallest files.
Does it work on a phone?
Yes, it works in modern mobile browsers. For long files a computer is faster.
Is it free?
Yes. All tools on ConvertNest are free to use, with no sign-up, limits on the number of files or watermarks.
Are my files uploaded anywhere?
No. The conversion runs entirely in your browser, on your own device. Your files are never sent to our server, which also makes it fast and safe for private documents.
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