Free online video tool
WEBM to MP4
WebM recordings from browsers and screen recorders become MP4, which plays in more apps and uploads to every social network.
PrivateRuns on your device
FreeNo account, no watermark
Limit250 MB per file
How it works
- 1Choose a WEBM file.
- 2Convert to MP4 on your device.
- 3Download the MP4.
FAQ
How do I convert WEBM to MP4?
Drop the WEBM file on this page and select Convert. The MP4 downloads when it is ready.
Are my files uploaded?
Files are processed in your browser with a local copy of FFmpeg. They are not uploaded to Super Media.
Is there a size limit?
Files up to 250 MB. Longer or high-resolution videos take longer because your own device does the work.