Skip to content
YallaConvert

Convert WebM to MP4

Free, fast, and private WebM-to-MP4 conversion that runs entirely in your browser.

Drop a file here or browse

Processed on this device. Nothing is uploaded.

  • No signup
  • No watermark
  • No file leaves your device

How to convert WebM to MP4

  1. Add your WebM file

    Drop it into the box above or click to browse. It stays on your device — nothing is uploaded.

  2. Confirm MP4 as the output

    The target format is preselected; switch it if you need a different one.

  3. Convert

    The conversion runs locally in your browser. A long video can take a while, because your own device does the work.

  4. Download your MP4 file

    Save the result straight to your device. We never keep a copy, because we never receive one.

Frequently asked questions

Is the WebM to MP4 converter free?
Yes. Conversions are free, with files up to 100 MB on the free plan (Pro raises this to 1 GB). There is no watermark and no sign-up.
Is my WebM file uploaded to a server?
No. The WebM-to-MP4 conversion happens entirely in your browser. Your file is processed in memory on your device and never sent anywhere.
How long does the conversion take?
Small images and documents are usually done in seconds. Large files, and long videos in particular, take longer because your own device does the work; a progress bar keeps you posted.
Do I need to install anything?
No installs and no extensions — everything runs in the page you're on, on desktop and mobile.

Related video conversions

MP4 WebMMP4 MKVMP4 GIFMP4 MP3MP4 WAVMP4 AACWebM MKVWebM GIF

100% private. YallaConvert never uploads your WebM file. The conversion to MP4 happens locally on your device, so nothing is sent to a server and nothing is stored.

To convert WebM to MP4, drop your file in the box above (or click to browse), then download the result. There's no sign-up, no watermark, and no queue.