Convert WebM to MP4
Turn WebM screen recordings and web clips into MP4s that play everywhere.
How do I convert WebM to MP4 without uploading it?
To convert WebM to MP4 without uploading it, open FilesAll's WebM to MP4, add your WebM video and press Convert to MP4. FilesAll saves an MP4 that plays on iPhone, in PowerPoint, in video editors and on every website. It all runs in your browser on your own device, so the video stays private.
How to convert WebM to MP4 in 3 steps
Add your WebM
Press Choose files, or drag your WebM video onto the page.
Check the format
MP4 is already picked. There is nothing else you need to change.
Download your MP4
Press Download to save the MP4. Your original video is not changed.
Frequently asked questions
What is a WebM file?
WebM is a video format made for the web. Many screen recorders, video call apps and websites save WebM. Web browsers play it, but some phones, editors and slide apps do not.
Will my video lose quality?
The video is saved again in MP4 at high quality, so most people won't see a difference.
Is the sound kept?
Yes. The MP4 keeps the sound from your WebM video.
Why does it take a while?
WebM and MP4 store video differently, so every frame is saved again. A computer is usually faster than a phone. You see the progress and can cancel at any time.
Can I make the video smaller too?
Yes. Use Compress video on the finished MP4.
Is FilesAll free?
Yes. You can use FilesAll free every day without signing up, and the tool shows how many free files you have left today. A free account gives you more each day, and Pro removes the daily limit.
Do I need to install anything?
No. FilesAll works in the web browser you already have, on Windows, Mac, Chromebook, iPhone and Android. There is nothing to install, and you do not need an account to start.
Are my files uploaded?
No. FilesAll does all the work inside your browser, on your own device. Your files are never sent to our servers or anyone else's, and they disappear when you close the tab.
Want to check for yourself? Your browser's developer tools list every request this page makes. None of them carries your file.