Free online MKV-to-WEBM converter — upload a MKV file and download a WEBM. Fast, private, no signup.
Drop your MKV file into the converter above — we auto-detect the real format from its bytes, convert it, and give you a WEBM to download. No software to install.
Yes. Convert MKV to WEBM for free right in your browser, with no account needed to get started.
Your file is transferred over an encrypted connection and anonymous uploads are temporary. You can also view and strip metadata (location, device, author) before you download.
Matroska open multimedia container. Open web video container (VP8/VP9/AV1).
Convert MKV to: MP4 · MOV · 3GP · AVI · FLV · MPEG · WMV · JPG · PNG · MP3
Convert to WEBM from: 3GP · AVI · FLV · MOV · MP4 · MPEG · WMV