Convert MKV to AVI
Convert MKV files to AVI in seconds. Free, no upload, no watermark. Trim, compress or edit before you convert.
or drag & drop videos, audio or images here, or paste with Ctrl+V
MP4 · MOV · MKV · AVI · WebM · WMV · FLV · GIF · MP3 · WAV · M4A · and 40+ more
- Files never leave your device
- No sign-up, no watermark
- Free forever
How to convert MKV to AVI
- Add your MKV fileClick “Choose files” or drag & drop your MKV file onto the page.
- Check the outputAVI is pre-selected. Optionally trim, crop, compress or tweak quality in the tabs.
- Convert & downloadClick “Convert & download”. Your AVI file is created on your device and saved instantly.
MKV vs AVI
Short answer: AVI is a classic Microsoft video container. It is still used by older software, DVD players and some cameras.
What is MKV?
MKV (Matroska) is a flexible open container that can hold almost any video, audio and subtitle tracks in one file. Popular for movies and archiving.
What is AVI?
AVI is a classic Microsoft video container. It is still used by older software, DVD players and some cameras.
Quality
If the video and audio codecs inside your MKV file are already compatible with AVI, we copy them without re-encoding: it's instant and lossless. Otherwise we re-encode with a high-quality setting (adjustable with the Quality slider).
| MKV | AVI | |
|---|---|---|
| Full name | Matroska Video | Audio Video Interleave |
| Type | video | video |
| Best for | Movies, multiple audio/subtitle tracks and archiving | Legacy software, older media players and Windows apps |
| MIME type | video/x-matroska | video/x-msvideo |
Last updated 2026-11-13
MKV to AVI: FAQ
Is this MKV to AVI converter free?
Yes. Converting MKV to AVI is completely free with no watermark, no sign-up and no file limits beyond what your device can handle. Optional Pro features like 4K export and AI subtitles are available if you need them, and a single 4K export can be unlocked without a subscription.
Are my MKV files uploaded to a server?
No, never. The conversion runs entirely in your web browser using FFmpeg compiled to WebAssembly. Your MKV file never leaves your computer or phone, and we never store it, which makes it private and fast.
Will I lose quality converting MKV to AVI?
If the video and audio codecs inside your MKV file are already compatible with AVI, we copy them without re-encoding: it's instant and lossless. Otherwise we re-encode with a high-quality setting (adjustable with the Quality slider).
How do I convert MKV to AVI on iPhone or Android?
Open this page in Safari or Chrome on your phone, tap “Choose files”, pick your MKV file and tap “Convert & download”. No app install needed.
Can I convert multiple MKV files to AVI at once?
Yes. Select several files and click “Convert all”. You can download them one by one or as a ZIP. Free users can batch-convert up to 5 files at a time; Pro removes the limit.
Can I edit the MKV before converting?
Yes: trim, cut, crop, rotate, resize, change speed, adjust colour, add text, music or subtitles, and more, all before you export to AVI.