Why learn how to convert MKV to MP4? As is known to us, the MKV or Matroska video format isn’t as popular as others like MP4. Do you know the strong compatibility of MP4 vs MKV? If you want to play videos in MKV format on any device, it is wise to convert MKV to MP4.

Then "how can I convert MKV to MP4 for free"? You have two choices. Complete this conversion using a free video converter, or convert MKV to MP4 online. So in this article, I have listed some free MKV to MP4 converters such as DVDFab Video Converter, DVDFab Toolkit, VLC Media Player and online website like A.convert.com for your reference. Let's learn how to convert MKV to MP4 with each of them.

1. How to Convert MKV to MP4 with DVDFab Video Converter (Mac/Windows)

How to convert MKV to MP4 Mac/Windows 10? The Video Converter software from DVDFab is such a premium software with 30-day free trial compatible with Windows and Mac that helps you convert any formats of videos to your desired format like 3D, H.265, 4K. Besides you can also decide the output format of audio and device.

How to convert MKV to MP4 without losing quality? DVDFab Video Converter can also do that. Apart from that, there is a video editor in this 30-day free software whch helps you edit your files at will. Suported by Hardware acceleration and batch conversion, it is really a perfect solution on how to convert MKV to MP4 Mac/Windows.  

What's more, if it is possible to convert an MKV file to MP4, do you expect batch conversion, that is, how to convert MKV files to MP4? No problem. Just give the batch conversion task to DVDFab Video Converter. Now, follow me to learn how it works.

Step 1 — Download and install DVDFab Video Converter

DVDFab Video Converter is one of the modules of DVDFab 12. So after you launch DVDFab 12, remember to click the module of "Converter" on the top. Then load your MKV file using "Add from Local" or "+" icon. DVDFab Video Converter is the best answer to how to convert MKV files to MP4, so here you can input many videos based on your need.

Step 2 — Choose "MP4" format from built-in Profile Library

How to convert MKV file to MP4? After loading your MKV video, navigate to the profile library via the "choose other profile" option from the Profile Selection Box. Here, you can also select the audio type and add external subtitles using the options on the main interface.

How can I convert MKV to MP4 or other formats?  There are 9 video formats provided, including "AVI, FLV, M2TS, MKV, MP4, MP4 (Theater), TS, WMV". Choose any one you want. At the same time, yo can set the audio format based on your preference.

How to convert MKV to MP4 on a special device? Click the option of "Device"  and choose one based on your needs. Theree are "Amazon, Apple, Box, Google", etc. for your choice.

Step 3 — Customize MKV file

How can I convert MKV to MP4 for free and customize it? Click the button of "Video Edit" and add Text, Image to you video, or use the options below on that new panel to "Adjust Video Properties", "Rotate", "Crop", "Trim", etc. Also you can add and extract sutitles from MKV with this MKV to MP4 converter.

For example, click the button of "Crop" and set the aspect ratio as which it showed below.

Step 4 — Set  an output directory and click the button  of "Start"

After knowing how to convert a MKV file to MP4, where to find the output videos? Decide where to save  your converted file, and start the MKV  to MP4 conversion.

This is how to convert MKV to MP4 free, without losing quality and in batches with DVDFab Video Converter. Continue to read and learn about other video converters.

2. How to Convert MKV to MP4 with DVDFab Toolkit (Windows)

DVDFab Toolkit can also convert MKV to MP4 with less steps.  And it is the best answer to how to convert MKV to MP4 Windows 10/8/7/XP/Vista. Now, let's learn how to use this free software.

Step 1 — Get DVDFab Toolkit launched on Windows 

With only three clicks, you can finish downloading and installing this program to learn how to convert MKV file to MP4.

Step 2 — Load MKV videos

Click "Converter" under "Video Tools" and follow the navigation to import more than one MKV files to this MKV to MP4 converter. DVDFab Toolkit supports source videos in multiple formats, such as MP4, 3GP, 3G2, AVI, DIVX, FLV, F4V, M2TS, MTS, MOV, M4V, MPEG, MPG, DAT, MKV, OGM, RMVB, RM, TS, TP, VOB, WMV, WTV, ASF, DVR-MS, WEBM. So it is not only solves how to convert MKV to MP4, but supports other videos to MP4.

Step 3 — Convert MKV to MP4

Set the output video  format as "MP4". Then customize your video and audio using the options below. How to convert MKV file to MP4 Windows 10 and without losing quality? DVDFab Toolkit is another choice.

Step 4 — Set an output directory 

You can save converted file in the destination by default at the bottom. Or, set another folder to store  your files. Then click the button of ‘"Start" to convert MKV to MP4. Want to know how to convert MKV to MP4 for free? DVDFab Toolkit is another assitant.

3. How to Convert MKV to MP4 with VLC (Windows/MacOS)

The thrid program to convert MKV to MP4 is VLC media player.  As you already know, VLC is a free software that can play almost any video format, so how do I convert MKV to MP4 for free gets the third answer. Let's learn how to convert MKV to MP4 Mac with the free version of this software.

Step 1 — Open the VideoLAN’s website and download VLC Media Player. Make sure that go through the whole installation process carefully, it usually happens that you install any bloatware. So how to convert MKV to MP4 safe with VLC is worth attention.

Step 2 — Next, launch VLC and click the “Media” tab in the top-left corner and choose “Convert” from the drop-down menu that consists other options as well.

Step 3 — To load the video file that you want to convert, cick the “Add” button and locate your file from the PC. Once it’s chosen, click on the “Convert/Save” button. You're close to how to convert an MKV file to MP4 successfully.

Step 4 — You can use the suitable format from the drop-down menu nearby “Profile.” — in our case, H.264 + Mp3 (this technically means MP4). This is the key point of how to convert MKV to MP4. There are also some pre-conversion settings allowing you to customize your video.

Step 5 — Finally, select your destination folder or location. Click "Start" and the timeline will show you the progress of MKV to MP4 conversion. Once finished, you can test the quality in VLC Media Player only. Maybe VLC is also competent to tell you how to convert MKV to MP4 without losing quality.

After such three offline MKV to MP4 converters, how about learning how to convert MKV to MP4 with online video converters? Continue to read and find the answers.

4. How to Convert MKV to MP4 Online?

How can I convert MKV to MP4 for free? Here's an online tool that could help. Not to mention, many websites provide that function, but Aconvert.com is the best out there. You can use it to convert MKV to MP4 and it supports a vast range of video formats. Apart from converting the video file formats, you can also do basic editing stuff as well. Cut through clips, merge videos, rotate and crop as per your demand when you learn how to convert MKV to MP4 online.

To simply convert MKV to MP4, first you have to upload it to the website's server. Though the website is trustable enough, we would still suggest you go through its policy before uploading any personal video.

Step 1 — Open the Aconvert website in your browser, select video option, and upload your MKV file. This is a basic step to learn how to convert MKV to MP4 Mac/Windows using an online tool.

Step 2 — Just below the uploading option, you can select the target format. Scroll through the list of video formats and choose “MP4“. Default settings would do fine, but you also have an option to fine-tune the size, bitrate, and other aspects through the website. Set the output format as "MP4" is important for learning how to convert MKV to MP4.

Step 3 — Once you're satisfied with the settings, click on the "Convert Now" button and the MKV to MP4 conversion will start.

After the conversion process is complete, you can directly download the video file without any quality loss.

Have you known how to convert MKV to MP4 online with this website. Besides A.convert.com, there are also other online MKV to MP4 converters you may be interested in.

Final Words

When you have an MKV file but it doesn't play on iPhone, how to convert .MKV to .MP4? These were all the simple and efficient on how to convert MKV to MP4 files. Out of these three, we would personally recommend you to try out the DVDFab Video Converter first, the one with the most powerful features. Of course, if you're not that feature-demanding, then DVDFab Toolkit, which is simpler, is also a nice choice.