Convert MKV to WMV online in seconds — free, with no sign-up. WMV is lossy and ideal for legacy Windows video; converted to MP4 for sharing. Your files are encrypted and deleted automatically after 24 hours.
MKV
Matroska Video — A flexible container that holds multiple audio, video and subtitle tracks.
WMV
Windows Media Video — A Microsoft format with limited support outside Windows.
How to convert MKV to WMV
- 1Upload your MKV file
Click “Choose a file” or drag and drop your MKV file onto the page — no sign-up or email needed.
- 2Convert to WMV
WMV is already selected as the output. Open Options to fine-tune quality if you like, then click Convert.
- 3Download your WMV file
Your WMV file is ready in seconds — click Download to save it. Files are automatically deleted after 24 hours.
MKV vs WMV
| MKV | WMV | |
|---|---|---|
| Full name | Matroska Video | Windows Media Video |
| Type | Video | Video |
| Compression | Lossy | Lossy |
| Best for | archiving films with multiple tracks; converted to MP4 for compatibility | legacy Windows video; converted to MP4 for sharing |
Frequently asked questions
Does converting MKV to WMV lose quality?
Both MKV and WMV use compression, so re-encoding discards a little more data. For a single conversion the change is virtually invisible; just avoid repeatedly re-converting the same file.
What's the difference between MKV and WMV?
Matroska Video (MKV) is lossy and best for archiving films with multiple tracks; converted to MP4 for compatibility. Windows Media Video (WMV) is lossy and best for legacy Windows video; converted to MP4 for sharing. Convert MKV to WMV when you need a video for legacy Windows video.
Is the MKV to WMV converter free?
Yes — converting MKV to WMV is completely free. There's no watermark, no sign-up and no email required, and you can convert as many files as you like.
Are my MKV files private and secure?
Yes. Your uploads are encrypted in transit, processed privately, and automatically deleted within 24 hours. We never share, sell or look at your files.
Can I convert MKV to WMV on iPhone, Android, Mac or Windows?
Yes. The converter runs entirely in your browser, so it works on any device — iPhone, iPad, Android, Mac, Windows or Linux — with nothing to download or install.
How long does it take to convert MKV to WMV?
Most files convert in a few seconds. Larger files take a little longer, and your upload speed is usually the limiting factor. There's no queue and no waiting for an email.
What else can I convert MKV files to?
Besides WMV, you can convert MKV to AAC, AVI, FLAC, FLV, GIF, JPG and more — see the full list of MKV conversions below.
Other conversions
Last updated July 2026