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Convert AVI to MKV
AVI is an old format that phones and browsers will not play, and its files are large. MKV is a flexible container that plays happily in VLC and media servers.
- Free
- No sign-up
- Batch conversion
Why convert AVI to MKV?
To convert AVI files to MKV, drop them on the counter above.
Most files convert in seconds: no queue, no email address, and the MKV result saves straight to your computer or phone.
How to convert AVI to MKV
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Add your AVI files
Drag your AVI files onto the counter or pick them with Choose files. You can add several at once.
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Check the settings
The defaults suit most cases. Change quality, size or other options if you like; after a change, one click converts again.
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Conversion starts by itself
Each file is converted to MKV and its row is stamped CONVERTED.
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Download your MKV file
Get the file with Download. With several files you can download them all as one ZIP.
AVI vs MKV
| Property | AVI | MKV |
|---|---|---|
| Full name | Audio Video Interleave | Matroska Video |
| Type | Video | Video |
| Compression | Depends on codec | Depends on codec |
| Created by | Microsoft | Matroska |
| Year | 1992 | 2002 |
| Extensions | .avi | .mkv |
| MIME | video/x-msvideo | video/x-matroska |
About the formats
AVI
Audio Video Interleave
AVI is an old video container Microsoft introduced in 1992. Old cameras, DivX/Xvid films and security recorders still produce AVI.
MKV
Matroska Video
MKV (Matroska) is a flexible video container that can hold several audio tracks, subtitles and chapters in one file. It is common in film collections and OBS recordings.
Frequently asked questions
Is converting AVI to MKV free?
Yes, completely free. No account, no daily limit, no watermark and no queue.
Does it work on a phone?
Yes. It works on iPhone, iPad and Android, with no app to install.
Is there a file size limit?
There is no size limit set by us. Files of hundreds of MB convert too; very large files take longer and are handled more comfortably on a computer than on a phone.
Other conversions
| Family | Give | → | Get | What you gain |
|---|---|---|---|---|
| MKV | AVI | works with old players | ||
| AVI | MP4 | plays everywhere | ||
| AVI | MP3 | sound only, plays on every device | ||
| AVI | MOV | Apple and video editors | ||
| AVI | WEBM | light video for the web | ||
| AVI | GIF | silent loop | ||
| AVI | WAV | sound only, lossless, ready to edit | ||
| AVI | M4A | sound only, better than MP3 at the same size | ||
| MP4 | MKV | multiple audio and subtitles · phone video | ||
| MOV | MKV | multiple audio and subtitles · iPhone video | ||
| WEBM | MKV | multiple audio and subtitles · screen recording | ||
| WMV | MKV | multiple audio and subtitles · Movie Maker video | ||
| FLV | MKV | multiple audio and subtitles · Flash-era video |