Convert WMV to MKV

WMV to MKV converter that runs entirely in your browser. 100% free, no signup, no upload — your files never leave your device. One-click batch conversion.

Conversions

Drop any file here or click to browse

All file types supported

About formats

WMV

WMV (Windows Media Video) is a video compression format developed by Microsoft as part of the Windows Media framework. WMV was designed for streaming over the internet and supports DRM copy protection. It is natively supported by Windows Media Player and remains common in corporate and Windows-centric video archives.

Developer: Microsoft
Initial release: 2003
Compression: Lossy
Color depth: up to 10-bit
Transparency: No
Animation: Yes

Best for

Windows-centric corporate video archives
Streaming video on legacy Windows systems
DRM-protected Windows Media content
Internal enterprise video distribution
Windows Media Player playback

Pros

+Good quality at low bitrates
+Native Windows Media Player support
+Supports DRM copy protection
+Designed for internet streaming

Cons

−Poor support on non-Windows platforms
−Proprietary Microsoft format
−Fewer modern editing tools support it
−Less efficient than H.264/HEVC

MKV

MKV (Matroska Video) is an open standard, royalty-free multimedia container that can hold an unlimited number of video, audio, subtitle and metadata tracks in a single file. Matroska is popular for high-definition content, anime, and movie archives because it preserves multiple language tracks and subtitle streams. MKV is supported by VLC, MPC-HC and most modern smart TVs.

Developer: Matroska Org
Initial release: 2002
Compression: Lossy or lossless
Color depth: up to 12-bit HDR
Transparency: No
Animation: Yes

Best for

Archiving HD movies with multiple tracks
Storing multiple subtitle languages
Anime and foreign film distribution
Preserving multiple audio streams
High-quality video libraries

Pros

+Open standard and royalty-free
+Holds unlimited video, audio, and subtitle tracks
+Supports lossless and lossy codecs
+Wide support in VLC and smart TVs

Cons

−Not universally supported on mobile devices
−Slightly larger overhead than streamlined containers
−Less ideal for web streaming than MP4

How to convert WMV to MKV

1
Select WMV files from your computer, Google Drive, Dropbox, a URL, or by dragging them onto the page.
2
Choose mkv — or any other format you need as a result (more than 200 formats supported).
3
Let the file convert, then download your mkv file right away.

WMV vs MKV

Property	WMV	MKV
Compression	Lossy	Lossy or lossless
Color depth	up to 10-bit	up to 12-bit HDR
Multi-track	Yes	Yes
DRM support	Yes	No
Open format	No	Yes

When to use WMV vs MKV

WMV

Windows-centric corporate video archives
Streaming video on legacy Windows systems
DRM-protected Windows Media content
Internal enterprise video distribution
Windows Media Player playback

MKV

Archiving HD movies with multiple tracks
Storing multiple subtitle languages
Anime and foreign film distribution
Preserving multiple audio streams
High-quality video libraries

Use cases for WMV → MKV

Windows-centric corporate video archives
Streaming video on legacy Windows systems
DRM-protected Windows Media content
Internal enterprise video distribution
Windows Media Player playback
Archiving HD movies with multiple tracks
Storing multiple subtitle languages
Anime and foreign film distribution
Preserving multiple audio streams
High-quality video libraries

Frequently Asked Questions

Is converting WMV to MKV free?

Yes. This WMV → MKV converter runs entirely in your browser and is completely free — no account, no credits, no watermark.

Which devices and platforms can I use to convert WMV to MKV?

Any modern device with a current web browser: Windows, macOS, Linux, Android, iPhone and iPad. There is nothing to install — the conversion happens locally.

Are my WMV files uploaded to a server?

No. Files never leave your device. The entire WMV → MKV conversion runs locally in your browser, so your data stays private.

Can I convert multiple WMV files at once?

Yes — batch conversion is supported. Add as many WMV files as you like and convert them to MKV in one pass, then download the results together.

What is the maximum file size?

There is no fixed server-side limit because the conversion happens in your browser. Practical limits depend on the available memory and CPU of your device.

Will converting WMV to MKV reduce the quality?

Because both formats use lossy compression, the MKV output will not bring back any quality that has already been lost in your WMV file. Avoid repeated re-encoding to keep the best quality.

Does MKV support transparency?

No — MKV has no alpha channel. Transparent areas of your WMV file will be filled with a solid background colour in the converted file.

How will the file size change after converting WMV to MKV?

Both formats use comparable compression, so the MKV output will be similar in size to your WMV file — typically within 10–20% of each other.

Related Conversions

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FREE

100% Free

No hidden fees, no subscriptions, and no limits. Enjoy complete access to all features gratis.

SIGNUP

No Signup Required

Start converting immediately without creating an account or sharing email address.

PRIVACY

Private & Secure

Your files never leave your device. All processing is completed locally for maximum privacy.

BATCH

Batch Conversion

Convert multiple files simultaneously to save time. Fast and efficient multi-file queue.

LOCAL

Runs in Browser

Utilizes advanced client-side WebAssembly technology to process files directly inside your tab.

FORMATS

200+ Formats

Supports a wide variety of formats including images, documents, audio, video, and more.

USER REVIEWS

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