MKV Converter
Convert files to and from MKV — free, online, no signup.
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MKV (Matroska Video) is an open-source container format released in 2002 that can hold unlimited video, audio, and subtitle tracks in one file. Loved for movie archiving and high-quality rips, it is not supported by iPhones, many TVs, and most editing apps — hence the constant MKV-to-MP4 conversions.
| Full name | Matroska Video |
| Developer | Matroska.org (open source) |
| Released | 2002 |
| Type | Media container |
| Typical use | movie archives, multi-audio/subtitle videos |
| MIME | video/x-matroska |
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Frequently asked questions
How do I open a MKV file?
MKV (Matroska Video) is an open-source container format released in 2002 that can hold unlimited video, audio, and subtitle tracks in one file. Loved for movie archiving and high-quality rips, it is not supported by iPhones, many TVs, and most editing apps — hence the constant MKV-to-MP4 conversions. If a device refuses to open it, the fastest fix is converting it to a more universal format with the converter above.
Is converting MKV files free?
Yes — 10 conversions a day with files up to 200 MB, free, with no signup and no watermarks.