🔒 Converts in your browser · files stay private

Convert WebM to MP4

Drop your WebM file into the box above (or click Choose Files), then click Convert and download your new MP4 file. No account or software needed.

Convert WebM to MP4 online, free — no installation, no sign-up.

or drop files here to convert WEBM → MP4

Or import from:

Max file size 1 GB. Browser-side conversions have no upload limit.

How to convert WebM to MP4

Drop your WebM file above or click Choose Files.

Your file is converted instantly in your browser — it never gets uploaded.

Grab your new MP4 file — done.

WebM is an open, royalty-free video format optimised for the web.

MP4 is the most widely supported video container, playable virtually everywhere.

Drop your WebM file into the box above (or click Choose Files), then click Convert and download your new MP4 file. No account or software needed.

Yes — this converter is completely free with no watermarks and no sign-up.

Absolutely. This conversion runs entirely inside your browser, so your WebM file never leaves your device.

You control the output. Use the advanced options (the gear icon) to set quality, and we preserve as much fidelity as the MP4 format allows.