Convert WebM to MP4
WebM is common on the web, but many phones, editing apps and social platforms don’t support it. Drop your video here to convert it to MP4. MP4 is the most compatible video format, supported by virtually every device, website and social platform.
Processed on your device. Nothing is uploaded.Drop files here or click to chooseSupports MP4, MOV, WebM, MKV. You can select multiple files.
Convert to
How to use
- Drag your WebM videos into the box above or click to choose them (multiple files are fine).
- Conversion starts automatically and shows its progress.
- Download your MP4 video when it’s done.
FAQ
Are my videos uploaded?
No. Conversion happens in your browser, so your video never reaches a server. That also means no file size limits and no watermarks.
How long does it take?
When only the container needs to change (as with most iPhone MOV to MP4 conversions), it takes seconds with no quality loss. When re-encoding is needed, speed depends on your device.
Does it work on phones?
Yes, but very large videos may fail on phones due to limited memory. For videos over 1 GB, a computer is recommended.