MKV to WMV Converter
Convert MKV to WMV free — no upload, no signup
To convert MKV to WMV, drop your MKV video into the box below and click Convert. Fylo converts with ffmpeg running inside your browser, so nothing is uploaded and there's no signup or watermark. Make MKV videos play on Windows-only setups without codecs.
Drop videos here
or tap to browse · paste with Ctrl+V · add many at once
Your files never leave your device
If the video already uses codecs that fit the new format, Fylo repackages it instantly with no quality loss.
Advanced
How to convert MKV to WMV
Add your MKV videos
Drag and drop MKV files into the box or tap to choose them. The converter engine (about 31 MB) downloads once, the first time you convert.
Choose quality (optional)
Balanced quality suits most videos. If the codecs already fit WMV, Fylo repackages the file instead of re-encoding it, with no quality loss.
Convert and download
Click Convert, then download each WMV file or all of them as one ZIP.
Why convert MKV to WMV?
Older Windows PCs and Windows Media Player versions can't open MKV without codec packs. WMV plays natively.
What happens when you convert MKV to WMV?
Fylo re-encodes to WMV2 video and WMA audio. Expect a larger file and a longer conversion for HD movies.
How does Fylo convert MKV to WMV?
Fylo reads the MKV with ffmpeg compiled to WebAssembly and writes Windows Media Video 8 (WMV2) with WMA2 audio in an ASF container. MKV's usual codecs (Any: H.264, HEVC, VP9, AV1…) can't go into WMV as-is, so the video is re-encoded. Speed depends on your device: short phone clips take seconds, while on our slow test PC a 2-minute 1080p video took about 10 minutes. Only the first video and audio track are kept, and the original resolution is preserved unless you pick 1080p, 720p or 480p under Advanced.
What's the difference between MKV and WMV?
MKV is the Matroska container, an open standard first released in 2002. It can hold virtually any video, audio or subtitle codec, and any number of tracks — so one file can carry several languages, director's commentary and subtitles. WebM is a restricted subset of Matroska.
WMV (Windows Media Video) is a family of Microsoft video codecs introduced in 1999, stored in the Advanced Systems Format (ASF) container together with WMA audio. WMV 9 was standardised as VC-1 and used on HD DVD and early Blu-ray discs.
Learn more: MKV format guide · WMV format guide
| Property | MKV | WMV |
|---|---|---|
| Developed by | Matroska project (open standard) | Microsoft |
| Introduced | 2002 | 1999 |
| Typical video codecs | Any: H.264, HEVC, VP9, AV1… | WMV 7/8/9 (VC-1) |
| Typical audio codecs | Any: AAC, Opus, FLAC, DTS, AC-3… | WMA |
| Plays in web browsers | Partly (Chrome/Edge for some codecs) | No |
| Compatibility | VLC, Plex, Kodi, most smart TVs; not iPhone or many editors | Windows Media Player, Windows apps; poor on Mac and phones |
| Best for | Movies with multiple audio and subtitle tracks | Old Windows software and PowerPoint presentations |
Frequently asked questions
Does Windows 11 play MKV?
The Media Player app plays many MKVs, but older Windows versions and Windows Media Player may not.
Are subtitles kept?
No — burn them in with a video editor if you need them.
Is my MKV file uploaded to a server?
No. Fylo runs ffmpeg, the same engine used by professional video tools, compiled to WebAssembly inside your browser. Your MKV file is read directly from your device and never sent anywhere.
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