Free converter
WebM to MP4 converter
WebM files from screen recorders and browsers often won't open on iPhone, in Premiere or in WhatsApp. Convert them to H.264 MP4 that plays everywhere.
How it works
- 01
Drop your WebM file
- 02
Press Convert: we re-encode it to H.264 with AAC audio
- 03
Download your MP4
Server speed
A real FFmpeg 8 server does the work, so big files and phone uploads don't depend on your device.
Big files
Up to 500 MB free, 2 GB on paid plans. No browser memory limits.
Private
Files are processed in an isolated sandbox and deleted automatically.
No watermark
Free after sign-up. No credits, no card, no watermark.