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MKV to AVI Converter

Convert MKV files to AVI without installing software or uploading anything. If your MKV contains H.264 video, Smart mode copies it into the AVI in seconds; other codecs are re-encoded to MPEG-4 Part 2.

  • 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.

What happens when you convert MKV to AVI

Inside a typical MKVH.264, HEVC (H.265) or VP9 video with AAC, AC-3 or Opus audio
Copy without re-encodingSometimes: it depends on the codec inside your file, and Smart mode checks this automatically
When re-encodedMPEG-4 Part 2 video with MP3 audio
Extra tracksOnly the first video and audio track are kept; extra audio tracks and subtitles are dropped
Opens inWindows Media Player and VLC; phones and browsers usually do not

Sizes are typical values; your files will vary with content and settings.

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
AVI

AVI Audio Video Interleave

AVI is Microsoft's 1992 video container. It is still found in old camera footage, DVD rips and legacy Windows software.

AVI converter

How to use the MKV to AVI Converter

  1. 1

    Choose a MKV file or drop it onto the page.

  2. 2

    Review the video options. The defaults suit most files.

  3. 3

    Click Convert and download your AVI when processing finishes.

Why convert MKV to AVI?

MKV is common for films, TV episodes and OBS recordings, because one file can hold several audio and subtitle tracks. iPhones, browsers and most social networks will not play MKV files. Choose AVI for older players, TVs with a USB port and legacy Windows software.

Frequently asked questions

Will the AVI 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 AVI 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 MPEG-4 Part 2 with MP3 audio.

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