WebM to MP4

Convert WebM videos to MP4. Large videos can take a few minutes.

WebM to MP4 converts WebM video, the format used by many web recordings and screen captures, into widely compatible MP4. Files up to 100MB; large videos can take a few minutes.

Drop your WebM file here

Upload files

Size up to 100 MB

How do I use WebM to MP4?

1
Drop your WebM file into the upload area, or click to browse. Files up to 100MB work.
2
Click Convert to MP4. Your video uploads over an encrypted connection and is re-encoded; larger files can take a few minutes.
3
Download the MP4 file, ready to play on virtually any device, browser, or video editor.

Frequently asked questions

Why convert WebM to MP4?

WebM plays well in browsers but isn't universally supported by phones, video editors, and older devices. MP4 is the most widely compatible format, so converting makes your video easier to play, edit, or share anywhere.

Does converting affect video quality?

The conversion re-encodes your video, which can introduce a small amount of quality loss depending on the original bitrate and resolution. For most recordings and screen captures, the difference isn't noticeable.

Do I need an account or subscription?

Universal PDF requires a Pro subscription. One subscription unlocks every tool on the site, cancel anytime.

How long are my files kept?

Your file uploads over an encrypted connection, and you can delete it anytime from My Files.

Last updated: July 8, 2026