How to Convert MP4 to MKV on Windows 10/Mac/Online [2025]

MP4 video is used widely today as many operating systems and video players are compatible with it. However, in terms of video quality, it is not as good as the MKV. That's why many people are looking for methods to convert MP4 to MKV. If you need this conversion, the best free video converter is needed. This post offers 7 MP4 to MKV converters to help you here.  Let's take a quick look at them:

Quick Method to Convert MP4 files to MKV on Windows 10:

Step 1. Download EaseUS VideoKit. Hit "Video Converter" > "Choose Files" to import MP4 files. 

Step 2. When the video files are imported, hit the "Settings" icon to choose the output format in MKV. 

Step 3. Before saving this video file, you can edit the video file by clicking the "Edit" option to modify the video files. 

Click the button below to start the conversion on Windows PC! There is No Watermark left in the trial version. 

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To know how to turn MP4 into MKV files in detail, click here>>

• Part 1. How to Convert MP4 Files to MKV on Windows PC (3 Ways)
• Part 2. How to Convert MP4 to MKV on Mac (2 Ways)
• Part 3. How to Convert MP4 to MKV Online (2 Ways)

How to Convert MP4 Files to MKV on Windows PC (3 Ways)

To satisfy Windows users' needs to convert MP4 files to MKV, we will provide three video converters in this part. Both of them are extremely popular and have great reputations. 

• #1 EaseUS VideoKit
• #2 EaseUS Video Editor
• #3 VLC Media Player

1. EaseUS VideoKit^[Hot]

The first MP4 to MKV converter we can choose is EaseUS VideoKit. Supports importing and exporting multiple video and audio formats, and it lets you convert MP4 files to MKV, AVI, MOV, FLV, FLAC, MP3, or other formats with simple clicks. In addition, you are also able to set the frame rate, bitrate, resolution (video), and quality based on your needs with its help. 

Besides that, another highlight of EaseUS VideoKit is that it offers 30 times faster conversion speed and bulk conversion. And that will assist you in converting single or multiple files in seconds.

Key features:

• Convert MKV to MP4 and other video files
• Support 1000+ video and audio file formats
• Merge MKV files into one file before conversion
• Capable of providing HD, 2K, and 4K videos

Without a watermark left in the trial version, start conversion now!

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Step 1. Launch EaseUS VedioKit and move to the "Video Converter" tab.

Step 2. Click "Choose File" or drag and drop your video files to the area. Add another file or folder atop. 

Step 3. Select the target format that you want to convert, and define its ratio, or you can choose a specific rate under "Device" and "Web Video" for certain platforms. You can also tab the gear icon next to the file to access the same interface.

Step 4. Click "Save to" for the location, and check "Merge all files" to merge them. Choose turn on "High-speed conversion" and "GPU Acceleration" optionally.

Step 5. Press "Convert" at the right of the clip or click "Convert All" in the bottom right to convert. After that, you can find the converted file in the designated folder.

2. EaseUS Video Editor

This Windows editing software is an all-in-one video and audio editor. It's friendly to both novices and pros. Using it, you can modify audio files, convert file formats, extract audio from video, etc. All tasks can be done in a few simple clicks. 

Stunning Features:

• Offer 300 visual and transition effects to add a professional touch to your movie
• Able to convert MP4 to MKV and other video formats on Windows PC
• Allow you to cut, trim, rotate, split, reverse videos, etc. 
• Enable you to add voiceover and mosaic to your video
• Offer a video speed changer software to change the speed

How to convert MP4 files to MKV on Windows using EaseUS Video Editor: 

Step 1. Download and install EaseUS Video Editor. Then, click "File" > "Import" > "Import File". Import your video files into this software. Or you can choose to drag the video file into it. 

Step 2. Once the video file is imported, you can click the "Export" button to get the converted file. 

Step 3. When the Export window shows, you can choose the output format in the "Video format" option. Meanwhile, you can edit the quality, name, output folder, etc. 

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3. VLC Media Player

As an open-source video converter, VLC Media Player can not only play video and audio files, but it also can do a whole lot of other things like converting videos between different formats. It works great for most formats and works for most of you.

Convert MP4 to MKV on Windows 10, using VLC media player:

Step 1. Download and launch VLC. In the top left corner, click "Media" > "Convert/Save..."

Step 2. Import the MP4 file that you want to convert. In the Open Media window, click "File" followed by "Add". Select the MP4 file in your folder. After that, choose the "Convert" button from the Convert/Save dropdown menu.

Step 3. Choose MP4 as the output format. Click "Browse" to set a destination for the converted file. Then hit "Start".

Step 4. The file position timer of VLC will start to increase like a progress indicator. Once it reaches the end, you will know that the conversion is completed.

Watch the YouTube video guide to learn more:

• 0:00 Intro
• 0:37 Why
• 1:28 Tutorial

How to Convert MP4 to MKV on Mac (2 Ways)

Here, you see two free and open-source video converters for Mac users to convert MP4 files to MKV. 

• #1 FFmpeg
• #2 HandBrake

1. FFmpeg

FFmpeg is an open-source program that can handle multimedia, video, audio, and other file types. It uses the command line for processing different files. Video converter is one of the many features supported by FFmpeg.  

Steps to convert MP4 files to MKV with FFmpeg:

Step 1. Download and install FFmpeg. Press [Win+R] to open the Run box. Enter "cmd".

Step 2. In the command prompt, run the following command line. Then press "Enter" to convert MP4 to MKV.

2. HandBrake

HandBrake is another open-source video transcoder. It allows you to convert video from nearly any format to a selection of modern, widely supported coders. To convert MP4 files to MKV with HandBrake, you just need to refer to the following steps.

Step 1. Download and launch HandBrake.

Step 2. Click "Source" and choose the "Open File" option to import the MP4 file.

Step 3. Click "Browse" to change the location where your converted file will be saved. Then, select MKV as the output format.

Step 4. At last, click "Start" to convert the MP4 video to MKV.

How to Convert MP4 to MKV Online (2 Ways)

Apart from those offline, there are still a lot of MP4 to MKV converters online. Using these online tools, you don't need to install any software. Next, we will offer you two options for online MP4 to MKV converters.

• #1 ConvertFiles
• #2 AnyConv

1. ConvertFiles

ConvertFiles is an excellent media file converter. It supports the free conversion of an extensive list of file formats, including video, audio, document, image, presentation, etc.. Currently, the file size limit is 25MB. 

How to make this online conversion using ConvertFiles:

Step 1. Select the MP4 file from your computer using the browse function.

Step 2. Choose MKV as the destination format.

Step 3. Once the conversion is completed, download your converted file immediately.

2. AnyConv

AnyConv is another free MP4 to MKV converter. It supports over 300 file formats. When converting files with AnyConv, it will take care of your files out of harm's way and keep them private. Moreover, it eliminates uploaded files after being done the conversion and will not be accessed by anyone.

Check the steps below to convert MP4 to MKV with AnyConv: 

Step 1. Click the "Choose File" button to select an MP4 file on your computer.

Step 2. Click the "Convert button" to start conversion.

Step 3. When the conversion process is complete, you can download the MKV file.

Conclusion

In this article, you have learned about 7 free and useful video converters that can help convert MP4 to MKV on Windows PC, Mac, and online. You can pick the right one according to your situation. For Windows users, the EaseUS VideoKit is highly recommended. It can help you deal with almost any media file conversion. In short, it's worth trying!  

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Convert MP4 to MKV FAQs

If you have other questions about converting MP4 to MKV, rely on the following answers.

1. Can VLC convert MP4 video files to MKV?

Yes, VLC can convert MP4 video to MKV.

Step 1. Import your MP4 file. Open VLC and click "File" > "Convert/Save" > "Add" >"Convert." 

Step 2. Select MP4 as the output format. Then click "Browse" to set a location for the converted file.

Step 3. Choose the "Start" option to convert MP4 files to MKV.

2. How can I convert MKV to MP4 for free?

To convert MKV to MP4 for free, you can try many free converters. Here, we introduce EaseUS Video Editor to you.

Step 1. Download and launch EaseUS Video Editor.

Step 2. Import an MKV file and drag it to the timeline.

Step 3. Click "Export" and choose the "MP4" option. Here, you can adjust the quality and bitrate. After all down, click "Export."

3. Is MKV format better than MP4?

MKV files are multimedia container formats. An MKV container can incorporate audio, video, and subtitles into a single file—even if those elements use different types of encoding. This does not mean the quality of the MP4 file is not as good as MKV. Because MKV and MP4 are both container formats, they can encapsulate the same video and audio.

4. How do I convert MP4 video to AVI?

EaseUS Video Editor can help you convert MP4 to AVI as well.

Step 1. Launch EaseUS Video Editor and choose an aspect ratio.

Step 2. Import the MP4 file and load it to the timeline.

Step 3. Click "Export" and select the "AVI" option. Then click "Export" to convert MP4 to AVI.