Convert WMV to MKV
Turn your WMV file into an MKV that plays where you need it, right in your browser.
- Free to start
- In your browser
- Up to 1GB
How to convert WMV to MKV
Upload your WMV file
Drag and drop a WMV file to turn into MKV, or click to browse. Anything under 1GB, and nothing is installed.
Confirm MKV as the output
MKV is already selected, so there is nothing to configure. Switch to another format in the panel if WMV needs to go somewhere else.
Convert and download
We convert the WMV on our servers, usually in under a minute. Create a free account to download the MKV, or keep editing it in REQO.
Why convert WMV to MKV?
WMV is Microsoft’s Windows Media format. It shows up in old corporate video libraries and PowerPoint exports, and it stops dead the moment a file has to leave Windows.
The practical problem: macOS, iOS and Android need extra software, and usually just fail. Browsers cannot play WMV, so it can never be embedded on a page. Its compression is generations behind H.264, so files are bigger than they need to be.
MKV solves that. Keeps multiple audio and subtitle tracks in one file.
Container
Typical codecs
Best for
Plays on
File size
| Feature | WMV | MKV |
|---|---|---|
| Container | Advanced Systems Format (ASF) | Matroska |
| Typical codecs | Windows Media Video | Almost anything: H.264, HEVC, AV1, VP9 |
| Best for | Legacy Windows workflows and old PowerPoint decks | Archiving with multiple audio and subtitle tracks |
| Plays on | Windows; almost nothing else | VLC and desktop players; rarely anywhere else |
| File size | Moderate, but dated compression | Depends entirely on the codec inside |
WMV to MKV questions
Is the WMV to MKV converter free?
Yes. Convert and preview the result for free, then create a free account to download it. There is no per-file charge and no watermark on the MKV itself beyond the free-plan badge.
Do I need to install any software?
No. The conversion runs on our servers and the whole flow happens in your browser, so it works the same on Windows, macOS, Linux, iPhone and Android. Nothing to install at either end. Where WMV plays: Windows; almost nothing else. Where the MKV you get back plays: VLC and desktop players; rarely anywhere else.
Does converting WMV to MKV reduce the quality?
Converting re-encodes the video, so it is not bit-for-bit identical. We encode at a high quality target, which keeps the result visually indistinguishable from the WMV on normal viewing. What changes is the container and the codec. MKV holds: Almost anything: H.264, HEVC, AV1, VP9. Converting the same file back and forth repeatedly will eventually show, so keep your original.
How large a file can I convert?
Anything under 1GB per upload, which is more footage in some formats than others. WMV: Moderate, but dated compression. MKV coming back: Depends entirely on the codec inside. For anything bigger, trim or compress it first, both are free tools here.
Is my file kept private?
Your upload is processed and then held only as long as your project needs it. Nothing is published, indexed or shared unless you create a share link yourself.
Other formats
Everything else you can do here.
Every conversion for a format
Convert to MP4
Convert to WebM
Convert to AVI
Convert to WMV
Convert to 3GP
Convert to M4V
Convert to MPEG
Convert to GIF
Convert to MP3
Convert to WAV
Convert WMV to MKV now
Free, in your browser, and the file stays open in a full video editor afterwards.