WebM to MP4 converter

Turn WebM videos into MP4 with H.264 video and AAC audio — works everywhere. Requires FFmpeg on the server. Free, no registration.

WebM in MP4 out HTTPS

Drop your WebM here

or browse — up to 150 MB • WebM only • FFmpeg on server

Choose WebM file

Drag and drop or pick a .webm file up to 150 MB.

We transcode to MP4 with H.264 and AAC using FFmpeg.

Save the MP4 for editing, sharing, or devices that prefer MP4.

Maximum compatibility across devices and apps.

MP4 plays on phones, tablets, TVs, and most video editors.

Standard codecs for smooth playback and editing workflows.

Convert in the browser when FFmpeg is available on the server.

Need WebM instead? Try MP4 to WebM.