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 UniFab Video Converter, VLC Media Player, and online websites like A.convert.com. Let's learn how to convert MKV to MP4 with each of them.

How to Convert MKV to MP4:

1. How to Convert MKV to MP4 with UniFab Video Converter Pro

MP4 to MP3 Converter

UniFab Video Converter

This Video Converter is the best method for whenever you want to convert MP4 to MP3 on Windows easily and efficiently.

Key Features:

  • Support to convert any video to 1000+ video and audio formats
  • Convert or compress videos to any video format without quality loss
  • Offer customized settings and a built-in video editor to make your video 
  • Convert multiple videos with the Batch Mode

[Tutorial] How to use UniFab to convert mkv to mp4

Step 1

Install and launch the UniFab Video Converter on your device first.

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Step 2

Select the video/file you want to convert from mkv to mp4, add it into UniFab Video Converter.

mkv to mp4: unifab

Step 3

Customize the format and video resolution you want, then, click the Start button to convert your mkv video to MP3mp4 format.

mkv to mp4: unifab

This is the easiest and fastest way to convert mkv to mp4. UniFab Video Converter supports batch video conversion, so you can import lots of mkv videos or other formats of videos and convert such files to MP3 format or other formats you want at a time. 

2. How to Convert MKV to MP4 with UniFab Toolkit

Except for UniFab Video Converter,  UniFab Toolkit can also convert MKV to MP4 with fewer steps.  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.

[Tutorial] How to use Toolkit to convert mkv to mp4

Step 1

Get UniFab 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.

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

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

Step 4

Set an output directory 

You can save the converted file in the destination by default at the bottom. Or, set up another folder to store your files. Then click the button of ‘"Start" to convert MKV to MP4.

3. How to Convert MKV to MP4 with VLC 

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.

[Tutorial] How to use VLC to convert mkv to mp4

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.

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

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.

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

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.

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

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.

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

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.

[Tutorial] How to convert mkv to mp4 with online sites

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.

How to Convert MKV to MP4:4. How to Convert MKV to MP4 Online?

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.

How to Convert MKV to MP4:4. How to Convert MKV to MP4 Online?

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

How to Convert MKV to MP4:4. How to Convert MKV to MP4 Online?

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 UniFab Video Converter first, the one with the most powerful features. Of course, if you're not that feature-demanding, then UniFab Toolkit, which is simpler, is also a nice choice.