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MKV Converter

Convert MKV files to MP4, WebM, MOV, AVI, GIF or MP3. Choose the target format, adjust the options and download. MKV is an open container that can hold almost any codec plus multiple audio tracks and subtitles. It is popular for archived films and series.

  • Free, no sign-up
  • Files never leave your device
  • Powered by FFmpeg
  • No watermark
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Your files are processed on this device and are never uploaded to a server.

MKV

MKV Matroska Video

MKV is an open container that can hold almost any codec plus multiple audio tracks and subtitles. It is popular for archived films and series.

MKV converter

How to use the MKV Converter

  1. 1

    Choose or drop your MKV file.

  2. 2

    Pick the format you want to convert to and adjust the options.

  3. 3

    Click Convert and download the result.

What is a MKV file?

MKV is an open container that can hold almost any codec plus multiple audio tracks and subtitles. It is popular for archived films and series. It is a lossy format best suited to archiving video with multiple audio and subtitle tracks. The main drawback is that iPhones, browsers and most social networks will not play MKV files.

Frequently asked questions

Will the MP4 lose quality?

Both formats are lossy, so converting re-encodes the data once more. Using a high quality setting keeps the generational loss very small. Avoid converting the same file back and forth repeatedly.

Does converting MKV to MP4 re-encode the video?

Sometimes: it depends on the codec inside your file, and Smart mode checks this automatically. A typical MKV contains H.264, HEVC (H.265) or VP9 video with AAC, AC-3 or Opus audio. Otherwise the result is H.264 with AAC audio.

Questions about privacy, file-size limits or conversion speed are answered in the general FAQ.