Video
Turn your WebM files into MP3 in seconds. Everything happens in your browser: nothing is uploaded to any server.
Drag your files here
Or paste them with Ctrl+V. They never leave your device.
Editing programs, TVs and old phones often cannot open it. As MP3 any device plays it, from your phone to the car stereo.
WebM is an open, patent-free video format made for the web; here it comes out with VP9 video and Opus audio.
Strengths: It compresses very well and plays directly in Chrome, Firefox, Edge and recent Safari.
Limits: Editing programs, TVs and old phones often cannot open it.
MP3 compresses sound lossily, removing what the ear barely notices, so a song takes just a few megabytes.
Strengths: Any phone, car, speaker, player or program plays it, however old.
Limits: It loses some quality with each re-encode and, at the same size, sounds worse than AAC or Opus.
No. The WebM to MP3 conversion runs entirely in your browser, with code downloaded from this site and executed on your device. You can check it in the Network tab of the developer tools or by going offline after the page loads.
Yes: in the options set the start and end time, for example from 1:30 to 2:45, and only that clip is extracted.
Up to 2 GB and 3 hours of video on desktop; on mobile, 500 MB and 30 minutes (AVI: 1 GB and 1 hour on desktop). If it is over, you are told before it starts and can trim it.
Yes. Drop as many WebM files as you like: several are converted at the same time, depending on your processor cores, and when they finish you can download each MP3 or all of them in a ZIP.