[← Free tools](https://tryflowdrive.com/tools) # WebM to MP4 converter

 Convert WebM (open web video format) into MP4, which plays on every browser, phone, and device. Everything happens locally in your browser — no uploads, no servers, and no waiting in a queue.

  100% private — your file is processed locally and never leaves your device.

  Drag & drop your video here

 or click to browse — MP4, MOV, MKV, AVI, WebM up to 2 GB

 FAQ ## WebM to MP4 — common questions

 ### Is the WebM to MP4 converter free?

 Yes — it's completely free, with no sign-up, no watermark, and no limit on how many files you convert.

### Are my WebM files uploaded to a server?

 No. The conversion runs entirely in your browser, so your WebM file never leaves your device and is never uploaded.

### How do I convert WebM to MP4?

 Drop your WebM file into the tool above, then click the convert button. The MP4 file is generated locally and ready to download in moments.

### Will I lose quality converting WebM to MP4?

 Quality is preserved as closely as the MP4 format allows. For most web video the result is visually identical to the source.

### Does this work on mobile?

 Yes — it runs in any modern browser on desktop or mobile, with nothing to install.

 Related ## Other conversions

 [MOV → MP4](https://tryflowdrive.com/tools/mov-to-mp4)[MKV → MP4](https://tryflowdrive.com/tools/mkv-to-mp4)[WebM → MOV](https://tryflowdrive.com/tools/webm-to-mov)[WebM → AVI](https://tryflowdrive.com/tools/webm-to-avi)[WebM → GIF](https://tryflowdrive.com/tools/webm-to-gif)[WebM → MP3](https://tryflowdrive.com/tools/webm-to-mp3)

 [See all free tools →](https://tryflowdrive.com/tools)