WebM to MP4 Converter: Free, Fast and No Upload
Drop in a WebM file and get a MP4 back. Convert WebM to MP4 when you downloaded or screen recorded a WebM clip and need it to play in an editor, on a phone or on a social platform. Everything runs on your own device, so your video is never uploaded.
MP4 plays almost everywhere. WebM suits websites. MOV suits Apple devices.
How to use the WebM to MP4
- Drop your WebM file onto the converter.
- Check that MP4 is selected as the output format.
- Press Convert to MP4, preview the result and download it.
What is WebM?
WebM is an open format made for the web. It is small and streams well in browsers. It plays on modern browsers and many websites. Many editors, phones and TVs do not play WebM natively.
What is MP4?
MP4 is the most widely supported video format. It plays on phones, computers, TVs, browsers and every social platform. It plays on practically everywhere. It is a lossy format, so a re-encode always trades a little quality for size.
Frequently asked questions
How do I convert WebM to MP4 for free?
Open the converter, drop in your WebM file, press Convert to MP4 and download. It is free with no watermark and no sign up.
Why does my WebM video not play on my phone?
Many phones and editors do not support WebM. MP4 works on nearly all of them.
Is my WebM file uploaded anywhere?
No. The conversion runs in your browser on your own device, so the file never leaves it.
Does converting reduce quality?
The video is re-encoded at high quality, so for normal viewing the difference is not noticeable. Converting never improves quality beyond the original.