Conversion

Convert MP4 WEBM

Free online MP4 video to WebM video converter. Lossy (size-optimized) quality, processed server-side, no signup required.

Convert MP4 to WEBM now
ffmpeg Free tier Lossy (size-optimized) ~6.0s per MB

How to convert MP4 to WEBM

  1. 1

    Open the converter

    Click the button above — the workspace opens with MP4 pre-selected as your source and WEBM as your target.

  2. 2

    Drop your MP4 video

    Drag and drop, or click to browse. Your file is uploaded over HTTPS and processed on our private servers — never shared with third parties.

  3. 3

    Download the WebM video

    The result downloads automatically when conversion finishes. Powered by ffmpeg — the same engine used by professional studios.

More conversions like this

Convert MP4 to other formats

MP4 AVI ffmpeg · BusinessMP4 GIF ffmpeg · BusinessMP4 MKV ffmpeg · BusinessMP4 MOV ffmpeg

Other ways to make a WEBM

AVI WEBM ffmpeg · BusinessGIF WEBM ffmpeg · BusinessMKV WEBM ffmpeg · BusinessMOV WEBM ffmpeg

Need a different conversion?

Browse the full format compatibility matrix or explore the Convert Tools hub — every supported pair in one place.

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