Free WebM to MP4 Converter
Convert a WebM video to MP4, directly in your browser.
Add a video to convert
Choose a WebM (or other browser-playable) video file.
Maximum 300 MB · Up to 3 minutesProcessed in your browser. Your video never leaves your device.
How to convert WebM to MP4
- Choose a WebM video file.
- Select Convert to MP4.
- Preview and download the result.
How this works
Your browser plays the WebM video and re-records it as a real MP4 file (H.264 video, AAC audio) using your browser's own built-in recording engine — no video is uploaded, and no server-side conversion is involved.
A note on scope
MP4 recording support depends on your browser — this currently works in up-to-date Chrome and Edge. Clips are limited to 3 minutes and 300 MB to keep processing time reasonable.
Common use cases
- Convert a downloaded WebM video into the more widely compatible MP4 format
- Prepare a WebM screen recording for an app or device that expects MP4
- Make a WebM video playable on devices that don't support WebM
Frequently asked questions
Is this WebM to MP4 converter free?
Yes. It is completely free, with no signup and no watermark.
Is my video uploaded anywhere?
No. The conversion happens entirely in your browser. Nothing is sent to Inqita or stored.
Is this a real MP4 file?
Yes. It's encoded with your browser's own H.264/AAC recording engine, not renamed or repackaged video, so it plays correctly in any MP4-compatible app or device.
Does this work in every browser?
MP4 recording is currently supported in up-to-date Chrome and Edge. If your browser doesn't support it, you'll see a clear message rather than a broken result.
Is there a size or length limit?
Yes. Videos are limited to 3 minutes and 300 MB to keep in-browser processing time reasonable.