WebM to MP4 converter
Re-encodes a WebM clip as H.264 + AAC MP4 for better app and platform compatibility. Runs entirely in your browser — nothing is uploaded.
Convert now →No sign-up · Nothing uploaded · Free tool
How to use
- Pick this tool
- Choose a WebM file from your device
- Save the MP4
FAQ
Is it free?
Yes, completely free with no limit.
Are my files uploaded?
No. Everything runs inside your browser. Your video never leaves your device.
Which browsers work?
Chrome, Edge or Safari. Firefox cannot record MP4.