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Best 8 Free MKV to MP4 Converters on Windows, Mac and Online

Vanessa Chiang updated on Oct 14, 2021 to Video Converter Tips

Do you have a video in MKV format that you can neither open nor play on many portable devices like Apple iPad, iPhone, Android phone, or even third-party video players? You may wonder if there is any free MKV to MP4 converter that can help you deal with it. Fortunately, transcoding files from MKV to MP4 is becoming quick and easy as soon as you reach here and find the capable MKV to MP4 converter.

MKV vs. MP4

MKV, also known as Matroska Video files, is an open-source and flexible video file format that is wildly used for HD videos. It remains future-proof and supports a high quality of both video and audio formats. MKV is also a  basic format for WebM video, which pursues making a high-quality, free video format that is available to all of us. 

MPEG-4, shortly known as MP4, is also a digital multimedia video format that has high compatibility and good performance among all video formats. It allows a high degree of compression without loss in quality. MP4 files are more user-friendly since it is easy to be copied, moved, and played. You can easily enjoy MP4 videos on most common video players.

Here we offer a comparison table between MKV and MP4. Check it to get more information about the differences.


                        MKV                          MP4


Limited supporting player, like VLC

Works on all major platforms


Difficult to Stream

Supports both HLS and MPEG-DASH

DRM Support


Lager and requires more space



Required for DRM




Files Size Larger Smaller

After contrasting the two video formats, you may find that MP4 is more applicable in most cases. That's why so many people are looking for solutions to convert MKV to MP4. Next, we are going to demonstrate each solution to convert video to MP4. You can follow the user guide and learn how to convert MKV to MP4 free on Windows, Mac, and online without losing quality.

Top 2 MKV to MP4 Converters on Windows for Free

There are three free video converters we will recommend in this part. Both of them can be used on Windows computers. Read on to get more information and learn how to convert MKV to MP4 on Windows for Free and never lose the original quality of your MP4 videos.

1. EaseUS Video Converter - Simple yet Powerful MKV to MP4 Converter

If you are looking for an easy yet professional video converter, then try EaseUS Video Converter

It lets you turn your MKV files into MP4 without any effort on your Windows PC. Just load an MKV file, set the output formats and other parameters, then start your conversion. The whole conversion will be completed in simple steps. 

Except for that, you are able to convert any audio or video file into different formats, as this program supports importing and exporting more than 1000 file formats. Most importantly, it ensures that there will be no quality loss at a high conversion speed.


  • Extremely easy to operate
  • Support video conversion in HD, 2K, 4K, and even 8K
  • Custom video or audio parameters flexibly
  • File combination feature is available

Step 1. Launch EaseUS Video Converter on your PC, and choose the "Video Converter." Click on the "Choose Files" button to import the video you want to convert. It also allows you to drag and drop the video to import it.

import video

Step 2. Click on the "Settings" option to select the target format. You can choose MP4 as the output format and adjust the resolution and bitrate properly.

select mp4

Step 3. Customize the folder to save the MP4 video after conversion. Two buttons are available to converter the file. The "Convert" button can help you convert one video, while the "Convert All" button can process a batch of videos. 

convert video to mp4

Step 4. In the "Finished" tab, you can find the converted MP4 video. If you want to preview it, click on the "Open" button to activate the built-in media player.

save video as mp4

2. EaseUS Video Editor -  Best Free MKV to MP4 Converter 

One of the simplest solutions to transfer an MKV video format to MP4 is using EaseUS Video Editor, a free Windows 10 video editor that has many more robust functions.  The first impression of EaseUS Video Editor is always simple yet powerful. On top of that, there are more persuasive reasons that empower it to rank on the top recommendation to modify an existing video format to the other, including:

  • Support all Windows operating systems
  • Support most popular source and target video formats
  • Convert video to MP4 or many other video or audio conversions
  • Support all-around video editing while converting
  • Support playing the MKV video before file conversion

Once downloaded the EaseUS Video Editor - the best free video converter for Windows 10, you'll be greatly satisfied with its ease of use, and the fast speed in taking care of some lengthy video files as well.

The tutorial of converting MKV to MP4 on Windows 10 without losing quality using EaseUS Video Editor:

Step 1. Import the source file

Launch EaseUS Video Editor. On the home screen, you can import the source file by either clicking the "Import" option or simply dragging the video to the appropriate area.

import file

Step 2. Add to project

You need to add the imported file to the track by choosing the "Add to Project" option, or you can drag and place the file to the track as you want.

add to project

Step 3. Export the source file

Now you can click "Export" on the main menu on the top.


Step 4. Save as MP4

Under the "Video" tab, choose MP4 as the desired video file format.

add to project

On the right pane, you can edit the file name, customize an output folder and settings, and then click "Export".

add to project

3. VLC - A Free MKV to MP4 Converter on Windows

When it comes to mentioning an MKV video, we must introduce VLC media player, which is one of the rare MKV compatible media players on the market. It's said that VLC is people's favorite choice for playing MKV files, mostly because it has built-in support. Better yet, it can also convert the MKV files to something more universal as MP4 for free.

One advantage of using VLC over the EaseUS video converter is that VLC is a cross-platform supported application. Both Windows and Mac users can benefit from the program. Only one difference that average users should notice, the process of converting MKV to MP4 with VLC is somewhat time-consuming. 

Here are steps to convert MKV to MP4 with VLC on Windows:

Step 1. Download and run VLC media player on your PC or Mac.

Step 2. From the main menu, select "Media > Convert/Save...".

convert mkv to mp4 with vlc media player step 1

Step 3. On the File tab, click "Add..." to add your MKV video to the list. (You can also use the drag & drop feature to upload the MKV file)

Step 4. Click "Convert/Save...".

Step 5. Specify your desired video format. You should choose "H.264 + Mp3 (MP4)".

convert mkv to mp4 with vlc media player step 2

Step 6. Specify under Destination to select a path to export the MP4 file. 

Step 7. Click "Start". Once the timeline progress finishes, your video will be ready.

The Best MKV to MP4 Converter on Mac -  Permute

Mac users may have a large demand for an MKV to MP4 converter because macOS does not natively support MKV. If you were sent an MKV file, you would have to convert it into MP4. Here we suggest you use Permute, a versatile video converter for macOS users. What's good about Permute is that you don't have to get an MP4 converter or FLV converter specifically, because it can mostly deal with all possible formats without losing quality.


How to convert MKV to MP4 on Mac with Permute:

Step 1. Download and open Permute on your Mac.

Step 2. Click on "File > Open" from the menu bar, .

Step 3. Upload the MKV file that you want to convert to MP4 and select "Open".

Step 4. Click "Video" at the top-left corner and drop down the menu to choose "MP4".

Step 5. Click the "play" button in the sub-window of your MKV file, which will start the conversion.

Top 5 Best MKV to MP4 Converters Online

The best part of having an online video converter is that you don't necessarily download it, and it doesn't matter what operating system you're running, only what internet browser defines its usability. 

When searching the best online MKV to MP4 converter on Google, you'll get overwhelming results that will definitely make you lost. How to choose the best online MKV to MP4 converter among the vast sea? Don't bother. We've made the decision for you.

1. ConvertFiles - A Simple Online MKV to MP4 Converter

ConvertFiles is a free online MKV file converter, which can work directly from your browse. It supports almost all video and audio formats, besides, the MKV to MP4 conversion is very simple and fast. All you have to do is to upload your MKV file, choose the MP4 as the output format, and click "Convert" at last. If you want to change the format of audio, image, and document, you also can complete the task with this online converter.

MKV to MP4 Converter - ConvertFiles

2. ZAMZAR - A Powerful Free Online MKV to MP4 Converter

ZAMZAR is another popular free MKV converter. This online MKV converter program supports more than 1,200 file formats, including MKV, AVI, WMV, MOV, and many more. Moreover, it has a high speed for MKV to MP4 conversion, you can finish the task within 10 minutes. (usually, it only takes 1-2 minutes) If you don't know how to convert MKV file to MP4, don't fret. You can check the simple steps on the interface. 

MKV to MP4 Converter - Zamzar

3. FileZigZag - A Fast and Easy MKV to MP4 Converter

FileZigZag can help you change your file formats for free, with support for document, images, ebook, audio, archives, and video formats. MKV to MP4 converter is just a little part of its functions. It uses a sophisticated conversion engine to deliver the best quality conversion. All the MKV to MP4 conversion will be done in a short time and the output file quality is the best. What's more, this online software will delete all the uploaded files after 24 hours to protect your privacy. 

MKV to MP4 converter - FileZigzag

4. Convertio - An Online MKV Converter for Free

Convertio is a great online MKV to MP4 converter, which supports over 25600 different conversions between more than 300 different file formats. For turning MKV files into MP4, the conversion takes place in the cloud and will not consume any capacity from your computer. This online converter offers many advanced options to choose quality, aspect ratio, codec, and many others. Most importantly, this MKV to MP4 converter can work for all platforms. You can convert from MKV to MP4 free anywhere, anytime.

MKV to MP4 Converter - Convertio

5. Online-Convert - A Free MKV Video to MP4 Converter

 Online-Convert also provides many file conversions, like audio, document, image, image, and more. You can import your MKV files from your computer, Dropbox, and Google Drive. It lets you easily convert MKV files to MP4. Apart from changing the MKV file format, it offers a great many editing options. You can choose a preset, change screen size and video bitrate and frame rate. Also, you can simply rotate, mirror, and crop your video with the online MKV converter. 

MKV to MP4 converter - Onlineconvert

Tips about changing MKV file to MP4 with Online MKV Converter:

The operation of online file conversion software is pretty the same: Upload files from a local drive (Some support uploading from Cloud) > Choose a destination file format (MP4) > Start/Convert.


Whenever you need to convert MKV to MP4 to solve the incompatible issue on certain devices or reduce the file size, choose the right MKV file converter among the best found on this page, based on your needs.

If you are a Windows user, we recommend EaseUS Video Converter. This software can help you turn MKV files into MP4 easily without losing quality. Besides, you also use it to do other video or audio conversion tasks in a short time. As for the media converter, it is worth trying!

FAQs About Converting MKV to MP4

There are some other questions about converting MKV to MP4. If you want to know more about it, just continue reading.

1. How can I convert MKV to mp4 for free?

Using EaseUS Video Converter, you can convert MKV to MP4 for free. You can refer to Part 2 to learn how to turn MKV into MP4.

2. How do I change an MKV file to mp4?

To change an MKV file to MP4, you can use some MKV converters. Here is the list of MKV to MP4 Converter. EaseUS Video Editor

  • VLC Media Player
  • FFmpeg
  • ConvertFiles
  • Zamzar

3. What is the best free MKV to mp4 Converter?

Here are the seven best free MKV to MP4 Converter.

  • EaseUS Video Editor (Windows)
  • VLC Media Player (Windows/Mac)
  • CovertFiles (Windows/Mac/Linux)
  • Zamzar (Windows/Mac/Linux)
  • FileZigZag (Windows/Mac/Linux)
  • Convertio (Windows/Mac/Linux)
  • Online-Convert (Windows/Mac/Linux)

4. How do I convert MKV to mp4 with VLC?

VLC is an open-source MKV to MP4 converter. You can move to Part 2 to check more details about how to change an MKV file to MP4.

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