Convert WebM to MP4
Turn a WebM video, like a screen recording, into an MP4 that plays everywhere, including QuickTime, iPhone and PowerPoint. It's converted in your browser, so the video is never uploaded.
Loading the converter… It needs JavaScript and a browser such as Chrome or Edge.
Loading the converter… It needs JavaScript and a browser such as Chrome or Edge.
WebM to MP4, the private way
- Never uploadedYour browser does the conversion itself, so private videos stay private and large files don't wait on an upload.
- Trim firstCut the start and end before converting, to the tenth of a second.
- Plays everywhereMP4 with H.264 video plays on Mac, Windows, iPhone, Android and in every app that takes video.
- Any video inOpen WebM, MP4, MOV and more. Out comes MP4, or a GIF for a short clip.
Questions and answers
Is it really free?
Yes. No account, no watermark and no file size limit beyond what your computer can handle.
Is my video uploaded?
No. The conversion runs in your browser with its built-in video encoder. Nothing is sent anywhere.
Why does my WebM not play on a Mac or iPhone?
Apple's players don't open WebM files. Converting to MP4 fixes that.
Which browsers can convert?
Chrome and Edge on a computer. They have the video encoder the converter needs.