Convert MKV to AVI
Convert MKV files to AVI locally, completely free and with maximum privacy.
Drag and drop your files here
or click to browse local files (large files supported, limited only by browser RAM)
Upload FilesPlatform Statistics
How to convert MKV to AVI
- Drop your .mkv files above, or click Upload Files. You can add many files at once.
- AVI is already selected as the output. Open the settings (gear icon) to fine-tune the result.
- Click Convert All. FFmpeg runs inside your browser through WebAssembly; nothing is uploaded.
- Download your .avi files as soon as each one finishes.
What to know about MKV to AVI conversion
- The video is re-encoded to H.264 video and MP3 audio so it plays wherever AVI is supported, and odd frame sizes are adjusted automatically.
- You can change the resolution, frame rate, playback speed and quality (CRF) before converting.
MKV vs AVI
| Feature | MKV (Matroska Video) | AVI (Audio Video Interleave) |
|---|---|---|
| Codecs used by PureConverter | H.264 video and AAC audio | H.264 video and MP3 audio |
| Best for | movies with several audio and subtitle tracks | compatibility with older Windows software |
| Opens in | VLC, mpv and most media players, Plex and most smart TVs | Windows Media Player, VLC, mpv and most media players |
MKV (Matroska Video): A flexible, open-standard video container format that can hold unlimited video, audio, picture, or subtitle tracks.
AVI (Audio Video Interleave): A classic Microsoft multimedia container format supporting synchronous audio-with-video playback.
Conversion options
- Resolution: original, 1080p, 720p, 480p or 360p
- Frame rate and playback speed (0.5× to 2×)
- Quality presets or a custom CRF value, and lossless mode
- Audio bitrate, sample rate and channels
Frequently asked questions
Is it safe to convert MKV to AVI here?
Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.
Is there a file size limit?
There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.
Can I convert several MKV files at once?
Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.
Related conversions
Need the opposite? Convert AVI to MKV.
Convert MKV to other formats
- MKV to MP4
- MKV to MP3
- MKV to WEBP
- MKV to GIF
- MKV to WAV
- MKV to MOV
- MKV to M4A
- MKV to FLAC
- MKV to WEBM
- MKV to AAC
- MKV to OGG
- MKV to OPUS
Convert other formats to AVI
- MP4 to AVI
- MOV to AVI
- WEBM to AVI
- WMV to AVI
- FLV to AVI
- M4V to AVI
- MPEG to AVI
- TS to AVI
- 3GP to AVI
- OGV to AVI
See every MKV converter and AVI converter, or browse the full converter directory.