WEBM to MP4
Convert WEBM files to MP4 in seconds, for free. Nothing to install.
Files are deleted from the server automatically after 1 h.
Why convert WEBM to MP4?
- MP4 is one of the most widely supported formats — it opens almost anywhere.
- Convert in a few seconds right in your browser, without installing software.
You don't need to install any software to convert WEBM to MP4. Upload your file, choose MP4 and download the result a few seconds later. The conversion runs on our servers and your file is deleted automatically after 1 h.
WEBM vs MP4: comparison
| Feature | WEBMWebM Video | MP4MPEG-4 Video |
|---|---|---|
| Developer | MPEG (ISO) | |
| Released | 2010 | 2001 |
| Type | video | video |
| Compression | lossy | lossy |
| Opens with | Chrome, Firefox, VLC | VLC, Windows Media Player, QuickTime |
Tip: converting to 720p or 480p makes the file much smaller.
How it works
- Choose or drop your WEBM file.
- Pick MP4 as the output format.
- Click “Convert” and download your file.
WEBM to MP4: questions and answers
Will quality be lost when converting WEBM to MP4?
MP4 uses compression, but at the default settings the difference is hard to hear or see. You can choose a higher bitrate in Options.
How long does WEBM to MP4 conversion take?
It depends on the length: a short file takes a few seconds, a long video can take a few minutes. Progress is shown as a percentage.
What is the maximum WEBM file size?
Up to 500 MB per file and up to 20 files at once — for free.
Can I convert WEBM to MP4 on my phone?
Yes. TezConvert works in any browser on Android and iPhone — no app needed.
How do I open a MP4 file?
MP4 files open in: VLC, Windows Media Player, QuickTime.
Are my files safe?
Files are used only for the conversion, never shown to anyone, and deleted automatically after 1 h. The original is deleted right after conversion.
⇄ Need the opposite? Convert MP4 to WEBM →