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.mkv

Matroska Video

Commonly known as MKV

Open standard free container format, supports unlimited tracks. developed by Matroska and released in 2002, it has become a standard for Movies with multiple languages, Archiving.

Key Features

  • Supports unlimited subtitles/audio tracks
  • Open source
  • High resiliency

Limitations

  • Not supported natively by many players/browsers

When to use MKV?

The MKV format is ideal for Movies with multiple languages, Archiving. Its MIME type is video/x-matroska.

How to open .mkv files

  1. macOS: Use native Preview/Quick Look or import into professional apps that support MKV.
  2. Windows: Open via Photos, Media Player, or dedicated editors by enabling the relevant codec pack.
  3. Browser: Drag the file into FileConvert to transform it into a universally supported alternative before sharing.

Popular Conversions

Convert MKV to...

MKV to MP4
MKV to WebM
MKV to AVI
MKV to MOV
MKV to MP3
MKV to GIF

Convert to MKV

MP4 to MKV
WebM to MKV
AVI to MKV
MOV to MKV
FLV to MKV
3GP to MKV

FAQs about MKV

How do I open a .mkv file?

You can open MKV files with native tools on Mac, Windows, and Linux or convert them for free using FileConvert.

Is MKV still relevant in 2025?

MKV remains essential for Movies with multiple languages thanks to its supports unlimited subtitles/audio tracks benefit.

How do I convert MKV into other formats?

Visit our MKV conversion directory to switch between Matroska Video and 200+ alternatives without uploading files.