Converter
MP4 to MP3 Converter
Convert MP4 to MP3 locally in your browser. Choose bitrate and download the extracted audio.
1Private — files stay local
Add video
MP4, MOV, WebM, MKV, AVI — up to 2 GB per file.
Drop video files or browse
Drag & drop a video file to start.
No files selected yet.
Video transcoding runs via WebAssembly locally. Large files may take a while.
2
Output format & settings
MP4MP3
Extract MP3 audio from MP4 video.
Frequently asked questions
Quick answers about converting MP4 to MP3 in your browser.
How do I convert MP4 to MP3?
Add your MP4 file to the converter, start the conversion, and download the MP3 file. Everything runs in your browser.
Is the MP4 to MP3 converter free?
Yes. The MP4 to MP3 converter is completely free with no sign-up, no watermarks, and no file count limits.
Are my files uploaded to a server?
No. Your files are read and converted locally in your browser, so they never leave your device.
What devices and browsers are supported?
It works in any modern browser on desktop, laptop, tablet, or phone — there is nothing to install.