filoshi.com / convert / mkv-to-webm

Convert MKV to WEBM

Free, instant, private. Your files never leave your browser — converted locally using FFmpeg.wasm. Need to convert multiple files? Get the desktop app →

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How to convert MKV to WEBM

  1. 1
    Drop your MKV file
    Drag it onto the converter above, or click Browse Files to select it from your computer.
  2. 2
    Click Convert
    WEBM is auto-selected. Hit Convert — FFmpeg.wasm processes everything locally in your browser.
  3. 3
    Download your file
    Your converted WEBM file downloads instantly. Nothing was uploaded to a server.
Need batch MKV to WEBM conversion?
The web converter handles 1 file at a time. Filoshi desktop converts unlimited files, runs offline, and supports 3,985 formats.
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