Convert WEBM to MP4
MP4 opens in almost every app; WEBM does not.
Your file never leaves your device: the conversion runs inside your browser, nothing is uploaded to any server.
Frequently asked questions
Is my file uploaded?
No. The converter is downloaded to your browser once and runs there; your file stays on your device.
Is there a size limit?
Large files depend on your device's memory. Up to a few hundred megabytes works on most computers and recent phones.
Why is the first conversion slower?
The first time, your browser downloads the converter (about 30 MB). After that it is cached.
Free converters that run on your device
Convert MP4 to MP3Turn a video's soundtrack into an MP3 you can play anywhere.Convert MOV to MP4Make iPhone and camera videos play on Windows, Android and the web.Convert MP4 to GIFMake a GIF from a short clip (up to 15 seconds).Convert MKV to MP4Usually instant: the video is copied into an MP4 without re-encoding.