Free online FLV-to-MKV converter — upload a FLV file and download a MKV. Fast, private, no signup.
Drop your FLV file into the converter above — we auto-detect the real format from its bytes, convert it, and give you a MKV to download. No software to install.
Yes. Convert FLV to MKV 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.
Legacy Flash video container. Matroska open multimedia container.
Convert FLV to: MP4 · MOV · WEBM · 3GP · AVI · MPEG · WMV · JPG · PNG · MP3
Convert to MKV from: 3GP · AVI · MOV · MP4 · MPEG · WEBM · WMV