How to Convert WMV to MKV Easily and Quickly

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by Brian Fisher Proven solutions

For those of you who know a thing or four about video formats, you’ll undoubtedly agree with me that WMV is a stubborn format. Apart from being supported by very few media player apps, it takes up chunks of storage space compared to MKV. That’s why most video lovers convert WMV to MKV. But do you know the best WMV to MKV converter app to help you with this? If not, don’t fret because this short tutorial has something for you.

Part 1. Best WMV to MKV Converter Recommended

UniConverter (Originally UniConverter) is a free convert WMV to MKV desktop app with lots of exciting features. Besides converting WMV to MKV, this software can also convert WMV to MP4, VOB, FLV, etc. It also offers file editing services such as adding subtitles, applying effects, trimming, compressing, and many more. And of course, it’s also a DVD/CD burner for smoother playback on your precious home DVD player.

UniConverter – #1 WMV to MKV Converter

Best WMV to MKV converter with 90x faster conversion and zero quality loss.
Convert WMV to MKV, MP4, AVI, and other 150+ standard formats.
Offers advanced video editing functions such as cutting, cropping, trimming, rotating, etc.
Download or record audio/video from all popular file-sharing sites.

Steps to easily convert WMV to MKV using UniConverter

Download, install, then run iSkysoft WMV to MKV converter and then do the following:

Step 1

Import WMV videos to the converter

Click the + Add Files drop-down button and then choose either the Add Folder or Add File option. Select your videos or folder then click Open. Your clips will be added on the window’s left side as thumbnails.

convert wmv to mkv
tips of hd video converter
Note: iSkysoft WMV to MKV converter offers you free video editing feature by clicking the edit icons below the WMV videos. Here, you can trim, cut, rotate, crop, etc.
Step 2

Set MKV as target format

Go to the home window’s top-right side and click the drop-down menu beside the Convert all files to button. Next, tap Video > MKV > resolution. To change the bit rate, quality, sample rate, etc. tap the + Create Custom option.

convert wmv to mkv format
Step 3

Convert WMV to MKV

Now choose a destination folder/path from the Output section. Lastly, click the big Convert All button. This software will indicate the conversion progress on the progress bar and save WMV clips on the Converted tab.

convert wmv file to mkv

Part 2. Convert WMV to MKV Online Free

Besides using UniConverter, these free and safe online tools can also help you convert WMV to MKV effortlessly. They are easy to use and provide tens if not hundreds of conversion formats. Let’s see some options:

Online UniConverter is not only an efficient WMV to MKV converter but also an impressive video editor as well. On this website, it’s easy to convert WMV to other typical formats like MP4, VOB, AVI, FLV, MOV, and many others. On video editing, Online UniConverter features a complete video/audio compressor. This feature allows you to reduce your file size, thereby saving some memory space. Below is how to convert WMV to MKV using

Online UniConverter

Step 1: Launch Online UniConverter then drag & drop or click the “+ or add” button at the center of your home page. Keep note that Online UniConverter allows file importation of up to 100MB only.

Step 2: After adding the WMV files, go to “Convert all files to” and choose “Video” > “MKV”.

Step 3: Finally, click “CONVERT”.

Pros and Cons:


        Supports several format conversion


          Quick conversion time


            Max upload is 100MB


            Limited editing features

        Another option is to use ConvertFiles to convert WMV to MKV online and losslessly. It has an intuitive interface that is free of those annoying ads. Here, you can turn and save a video URL from YouTube, Dropbox, OneDrive, etc. Additionally, ConvertFiles extracts sound from all video formats available. And yes, it will send a download link to an email of your choice. Sadly, ConvertFiles, offers up to 250MB only.

        Online UniConverter

        Step 1: Visit ConvertFiles and then click the “Browse” button to import files. You can also paste a WMV video link on the “or download it from” textbox.

        Step 2: Go to “Output format” > “Video” > “Matroska Video File(.mkv)”.

        Step 3: Check the “Send a download link to my email (Optional” and then enter an email address. Finally, hit “Convert”.

        Pros and Cons:


              Ad-free and easy-to-use interface


                Lots of output formats


                  No file editor


                  Limited upload size

              Part 3. General Knowledge About WMV and MKV

              In this part, we’ll have an insightful look at both MKV and WMV files. That said, Matroska Video File (MKV) is a video file container format developed by Steve Lhomme and comes with a .mkv extension. It holds videos, images, audios, and subtitles in one file. Because MKV is a RAW format, flipping and turning separate data tracks is easy. MKV plays on many media players, e.g. VLC, 5KPlayer, 4KPlayer, etc.

              Windows Media Videos (WMV), on the other hand, is also a video file format developed by Microsoft. It typically features a .wmv extension and a video/x-ms-WMV MIME type. Although many Windows media players support WMV, you’ll need to convert it to another format like MP4, MOV, or MKV to enjoy it on Mac. Even worse, some WMV clips have DRM encryption. Some supported video players include PowerDVD, VLC, MPlayer, and many others.

              To sum it up, both MKV and WMV are popular video formats that you’re likely to come across. However, if you’re a Mac OS user, WMV files can be troublesome. So be safe, convert WMV to MKV which is a universal format.

              Brian Fisher

              chief Editor

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