Convert AVI to MKV
Convert AVI to MKV online for free. Simply drop your AVI files below to convert them to MKV in seconds.
- Free Converter
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- No Uploads
Add files
Drop files anywhere on the page or paste them with Ctrl+V / ⌘+V
How to convert AVI to MKV?
Add AVI files
Drag and drop files onto the page or click the upload area. You can add several files at once.
Choose MKV and settings
Pick the target format and, if needed, adjust quality, size and other options.
Download the result
Conversion runs right in your browser. Download files one by one or all at once as a ZIP archive.
Converting AVI to MKV: what to know
AVI is converted to MKV to get a modern container for a media library: MKV is understood by media players, Plex, Kodi and TVs that support the format.
Video from AVI is re-encoded to H.264, replacing AVI's outdated codecs with a modern one. The re-encoding runs in your browser, so a long movie takes longer.
AVI or MKV: which to choose?
AVI (Audio Video Interleave)
AVI is a 1992 Microsoft video container that holds old films and camera recordings.
Best for old video archives and programs that accept only AVI.
MKV (Matroska Video)
MKV is a flexible container that holds any codecs, several audio tracks and subtitles.
Best for films and series with several audio tracks and subtitles.
What happens when converting AVI to MKV
If the codecs inside AVI are supported by MKV, the tracks are copied without re-encoding - quickly and without quality loss. Otherwise the video is re-encoded with the codec, bitrate, resolution and frame rate you choose.
You can also trim the video, rotate or flip it and remove the sound.
AVI files up to 2 GB are supported; the actual limit also depends on the free memory of your device.
AVI and MKV compared
Convert AVI to other formats
Convert other formats to MKV
What else you can do with AVI
Frequently asked questions
How do I convert AVI to MKV?
Add AVI files above - MKV is already selected as the target format. Adjust the settings if needed, start the conversion and download the MKV files.
Can I change the MKV quality?
Yes. Set the quality from 1 to 100 in the file settings: the lower the value, the smaller the file.