Turn MKV videos into AVI. It is converted in your browser, so the file never leaves your device.
Drop MKV files here
or choose from your computer paste with Ctrl V
from Photos or Files
Ready · other file types work too0 bytes uploaded, ever
Drop MKV (Matroska) files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.
Press Convert. Open Options first if you want to change the defaults. The work happens in this tab and can take a while for large files.
Save the AVI, or download everything as one ZIP if you converted several files.
The MKV to AVI converter is part of this page and runs inside your browser. Your videos are never sent to ToAny or to anyone else.
Nothing has to travel to a server and back, so work starts the moment you press Convert. How long it takes depends on your device and the size of the file.
No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.
MKV does not play on iPhones, in QuickTime or in most browsers and editors. AVI is read by old Windows software and some standalone players. MKV is at home in films with several audio and subtitle tracks; AVI is the usual choice for old Windows software and capture devices.
The defaults suit most files. Under Options you can lower the resolution, trade quality against file size, remove the sound and trim the start and end. This is demanding work for a browser: a long or high-resolution file can take several minutes, and your device does all of it, so keep the tab open.
This pair uses the compatibility engine, ffmpeg built for the browser, because AVI cannot be written by the browser's built-in codecs. It is a one-off download of about 10 MB that the browser keeps, it is slower than the built-in codecs, and it takes files up to 1 GB.
MKV is an open container that can hold practically any video and audio format plus multiple subtitle tracks. That flexibility is why it is popular for films, and why Apple devices and browsers refuse it.
Opens in VLC, Plex and many TVs; not iPhones, QuickTime or most browsers
MKV converterAVI is Microsoft's 1992 video container. It predates modern codecs and streaming, so files tend to be large and phones and browsers will not play them.
Opens in Windows Media Player and VLC; not phones or browsers
AVI converter| MKVMatroska video | AVIAVI video | |
|---|---|---|
| Stands for | Matroska | Audio Video Interleave |
| Type | Video container | Video container |
| Compression | Depends on what is inside | Depends on what is inside |
| Usually contains | Almost anything: H.264, HEVC, AV1, several audio and subtitle tracks | Often DivX, Xvid or MJPEG video with MP3 audio |
| Introduced | 2002, by the Matroska project | 1992, by Microsoft |
| Opens in | VLC, Plex and many TVs; not iPhones, QuickTime or most browsers | Windows Media Player and VLC; not phones or browsers |
| Best for | Films with several audio and subtitle tracks | Old Windows software and capture devices |
| File extension | .mkv | .avi |
No. The MKV to AVI conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.
Yes, a little. AVI files are always re-encoded here (MPEG-4 video with MP3 audio, which is what AVI players expect), and re-encoding costs some quality. Under Options you can favour quality or a smaller file.
Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.
The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the MKV file, press Convert and save the AVI. There is nothing to install.
Yes. MKV to AVI runs on the compatibility engine, which takes files up to 1 GB, and a long clip takes a while because it is slower than the browser's built-in codecs. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.