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WebM to MP4

Convert your WebM files to MP4 online, free and in seconds. Just upload, and the file is converted right in your browser — no software to install and no account needed.

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How to convert WebM to MP4

  1. 1

    Upload your WebM file — drag and drop it or click to browse. You can add several at once.

  2. 2

    MP4 is already selected as the output format, so there's nothing to configure.

  3. 3

    Click Convert and download your new MP4 file.

What is a WebM file?

WebM is an open, royalty-free video format built for the web. It streams efficiently at small file sizes and is supported natively by modern browsers, which makes it ideal for online video and HTML5 players.

How to open a WebM file

WebM plays in all current browsers (Chrome, Firefox, Edge) and VLC; older devices or editing software may need it converted to MP4.

What is a MP4 file?

MP4 is the most widely supported video format in the world. It packs high-quality video and audio into a compact file that plays on virtually every device, browser and app, which makes it the safe default for sharing and uploading.

How to open a MP4 file

MP4 plays everywhere: any browser, phone, smart TV, and the default video player on Windows, macOS, Android and iOS.

Frequently asked questions

Is it free to convert WebM to MP4?
Yes. Converting WebM to MP4 is completely free, with no watermark, no sign-up and no limit on the number of files.
Will converting WebM to MP4 reduce the quality?
No — the converter keeps your file at the highest quality the MP4 format allows.
Do I need to install any software?
No. The whole WebM to MP4 conversion runs online in your browser and works on Windows, Mac, Android and iOS.
Are my files kept private?
Your files are processed only to perform the conversion and are not shared with anyone.