Free Online WebM to MP4 Video Converter
Privacy-first, browser-based conversion. Your files never leave your device.
Initializing conversion core...
This may take a moment on first load.
Select or drag WebM video
Support for .webm files only
video_file.webm
0.0 MB
Converting...
0%
Processing happens locally in your browser RAM.
100% Private
Files stay in your browser. No server uploads.
Local Processing
Uses WASM for hardware-accelerated transcoding.
No Limits
No file count limits or subscription needed.