MKV, a free container format, is widely used for storing movies. How to convert MP4 to MKV? Here’s a list of the 8 best MP4 to MKV converters that you can use to handle MP4 to MKV conversions easily and quickly.

MP4 is well compatible with almost all the video players, but some people still want to convert MP4 to MKV for a better visual experience. Don’t worry, I’ve collected the 8 best MP4 to MKV converters including the best free tool – MiniTool Video Converter, let’s have a look!

#1. Freemake Video Converter

Compatibility: Windows

Freemake Video Converter is a professional video conversion tool loved by over 103 million users. Supporting more than 500+ formats, Freemake Video Converter can do the following conversions: MP4 to MKV, WMV to MP4, ISO to MP4, SWF to MP4, AVI to MP4, MKV to MP4, etc. Meanwhile, it can transform videos for any gadget including Apple, iPad, Android, Sony PSP, Xbox, Huawei, Xiaomi, Samsung, smartwatch, and so on.

If you need to edit MP4 videos before conversion, this MP4 to MPK converter also allows you to cut, merge, and rotate MP4 videos. What’s more, you are able to use this tool to hardcode subtitles in SRT, ASS, and SSA format into MP4 movies.

Furthermore, Freemake video converter can be regarded as a video downloader to download any video from Vimeo, YouTube, Dailymotion, Facebook, Flickr, VK, and LiveLeak.

Below are the steps on how to convert MP4 to MKV without losing quality.

Step 1. Launch Freemake Video Converter after installing it.

Step 2. On the main interface, click the Video button to import the MP4 file that you want to convert.

Step 3. Then you can see the video editing option listed at the top right of the window. If you want to cut the video, click the scissor icon to launch the video editing tool and cut the unwanted parts of the video.

Step 4. Tap on to MKV in the bottom bar and adjust the output settings.

Step 5. In the end, start the MP4 to MKV conversion by clicking the Convert button.

#2. DVDFab Video Converter

Compatibility: Windows, Mac

DVDFab Video Converter is a video converter that mainly focuses on video conversion including MP4 to MKV and MKV to MP4. It can recognize any popular video format and convert it to another format. Also, it supports batch video conversion.

In addition, this tool has a built-in video editor. With the video editing tool, you can add intro/ outro to video, add music to video, crop video, trim video, add thumbnail to video, add titles to video, add subtitles to video, etc.

It has a great user interface that is simple and intuitive, which offers a better user experience for you. However, the maximum output video resolution is 720p for free users. If you wish to upscale video to 2K, 4K, you need to get the paid version that costs $29.99/month, $44.99/year, and $69.99/lifetime.

Here’s a guide on how to convert MP4 to MKV using DVDFab Video Converter.

Step 1. Download and install DVDFab Video Converter on your computer.

Step 2. Open this video converter and go to the Converter tab. Then click the plus icon to add the MP4 file.

Step 3. After adding the file to the program, expand the output format list, and choose MKV as the output format.

Step 4. To customize video resolution, you can click on Video Settings to choose the desired resolution, and change frame rate, bit rate, video quality. Press the OK button to save changes.

Step 5. Afterward, tap on the folder icon next to the Save to field and select a new save path.

Step 6. Hit the Start button and wait until the MP4 to MKV conversion finishes.

#3. MiniTool Video Converter

Compatibility: Windows

As a video converter, MiniTool Video Converter is powerful that allows you to convert videos from and to any popular format including MKV, WMV, MP4, MOV, AVI, MP3, and M4A. It doesn’t come with video editing features, but it’s capable of downloading video/ audio from YouTube. With MiniTool Video Converter, you can not only convert MP4 to MKV free but also download videos in MP4, MP3 from YouTube at no cost.

Here are other features of MiniTool Video Converter.

  1. It’s 100% free and safe, with no ads, bundles, and watermarks.
  2. It supports over 30 formats.
  3. It can batch convert multiple files simultaneously.
  4. It can process video conversions in minutes.
  5. It lets you resize videos for Instagram, Vimeo, Facebook, and YouTube.
  6. It gives the option to download YouTube videos.

Follow the step-by-step guide on how to convert MP4 to MKV free.

Step 1. Download and install MiniTool Video Converter. After the installation, run this program on the computer.

MiniTool Video ConverterClick to Download100%Clean & Safe

Step 2. Drag and drop the MP4 file to the video converter. Or click on Add Files and choose the target file from File Explorer.

Step 3. Click this icon to open the output format window and then switch to the Video tab. In the Video tab, choose MKV and select the wanted quality. After that, you can change the destination folder by choosing Browse in the Output field.

choose MKV as the output format

Step 4. Then press on Convert to convert MP4 to MKV. It will take a few seconds to complete the conversion. Once done, you can find this converted video file in the Converted section. To locate the video file you just convert, click Show in folder. Optionally, you can click the playback icon on the video thumbnail to play the converted video.

Recommend article: Solved – How to Convert and Download Anything to MP4 Free

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#4. Format Factory

Compatibility: Windows

Format Factory, as one of the best multifunctional file converter, can convert different kinds of media file types such as video, audio, image, TXT, PDF, DOC, and Excel. It has the ability to unzip files in RAR, Zip, 7z format, download videos from popular streaming video sites like YouTube, and record streaming video.

Another great feature of this tool is that it can repair damaged video & audio files. If you find the video can’t be opened, don’t forget to try Format Factory to fix the corrupted video file. This awesome MP4 to MKV converter is only available on Windows. It’s free and you can find it on the pcfreetime website.

How to convert MP4 to MKV using Format Factory? Take the following steps below!

Step 1. Visit the pcfreetime website and download Format Factory. Then follow the guidance to install it on your PC.

Step 2. Run this converter and access the main interface.

Step 3. Click the output format MKV in the Video tab to open the import window. From the import window, click on Add File to import the desired MP4 file.

Step 4. After importing the MP4 file, you are able to clip the video, change the output folder, and adjust the output settings.

adjust the output settings

Step 5. When you are done, press OK to go on.

Step 6. Finally, click on Start to convert MP4 to MKV. After converting the MP4 file, click the folder icon to locate the converted file.

Fails to open video files on your device? Read this post: How to Fix Audio Codec Not Supported Error? 3 Solutions!

#5. Convertio

Compatibility: All operating systems

If you are searching for an online MP4 to MKV converter, then Convertio is the conversion tool for you. With over 300+ formats supported, you can convert files without a hassle. Besides converting videos, this tool also enables you to convert the following file types: audio, image, document, eBook, presentation, font, and archive.

Meanwhile, it’s also a video maker as well as a video editor. It can resize video, rotate video, cut video, compress video, and apply filters to video.

Here’s how to convert MP4 to MKV online.

Step 1. Go to the Convertio website.

Step 2. Click Choose Files to upload the MP4 from local, or import the video from Dropbox, Google Drive, or URL.

upload MP4 to Convertio

Note: The maximum upload file size is 100 MB.

Step 3. Expand the output format list and select the MKV option from the Video section.

Step 4. Click on Convert and then download the converted file.

#6. Online-Convert

Compatibility: All operating systems

Offering countless video conversions, Online-Convert can easily convert MP4 to MKV. Like other online converters, this one also lets you change the format of audio, document, image, archive, device, software, and many more.

Now, let’s see how to convert MP4 to MKV online with Online-Convert.

Step 1. Visit the Online-Convert website.

Step 2. Go to Video converter and select MKV as the output format.

Step 3. Then you need to import the target MP4 file from local, URL, Dropbox, or Google Drive.

Step 4. After uploading the file, press the Start conversion button to get started. Later, the MKV file will be downloaded automatically.

#7. Online Converter

Compatibility: All operating systems

Another solution to convert MP4 to MKV is using Online Converter. This is a web-based video conversion tool that can convert MP4 to any common format like MKV, AVI, MOV, and MP3. Additionally, it’s loaded with some editing tools: video resizer, video cropper, video cutter, video merger, video watermark maker, video compressor, and so on.

Follow this guide to convert MP4 to MKV online.

Step 1. Enter the Online Converter website in your web browser.

Step 2. Click on Video Converter, drop down the Convert to list, and choose the MKV format.

Step 3. Upload the MP4 file from your computer or URL and click the Convert button.

upload video file to online converter

Note: The maximum upload file size is 200 MB.

Step 4. Wait patiently until the conversion is completed and save the converted file.

#8. Online UniConverter

Compatibility: All operating systems

Supporting over 1000 formats, Online UniConverter can help you handle various video conversions including MP4 to MKV. It also offers you a desktop version that allows you to edit videos, download online videos, burn videos to DVD and compress videos.

Here’s how to convert MP4 to MKV online.

Step 1. Go to the Online UniConverter website.

Step 2. Tap on Choose Files to load the file from your computer. Or you can directly upload the file from your cloud services like Dropbox and Google Drive.

Step 3. Select MKV from the output format list and press on CONVERT.

convert MP4 to MKV online

Step 4. After the conversion is finished, you can download the MKV file to your device or save it to your Dropbox or Google Drive.


Here are the 8 best MP4 to MKV converters. All of them can perform the MP4 to MKV conversions quickly and easily. Pick the tool you like and try it now!

If you have any questions when using MiniTool Video Converter, please tell us via [email protected] or leave a reply!


How to play MKV files?
Here are some MKV players you can use: VLC Media Player, KMPlayer, ACG Player, 5KPlayer, and PotPlayer.
Is MKV better than MP4?
If you need to rip videos from DVD, MKV format is more suitable because it has better quality than MP4.
How to convert MKV to MP4 online?
  1. Go to the CloudConvert website.
  2. Upload the MKV file and choose the MP4 as the output format.
  3. Then convert MKV to MP4.
  4. Later download the converted file to your computer.
How to compress MKV files?
  1. Visit the PS2PDF website.
  2. Load the MKV file you want to compress.
  3. The save the compressed MKV file from the web.
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