“How can I convert MKV to MP4 file? I’m using MacBook Air, OS X El Capitan (10.11).” On Apple Support Communities, such kind of questions are frequently asked by Apple users. Though MKV files offer high-quality video and audio, nearly all Apple devices, including iPad, iPhone, iPod, iTunes, Apple TV, QuickTime, etc. couldn’t recognize MKV videos. Thus, you get the need to convert MKV to MP4 on Mac so as to play MKV videos in QuickTime or iOS devices, or editing in iMovie or FCP.

On Mac, you can use a desktop Mac video converter to convert MKV to MP4 Mac. On the other hand, an online video converter can be employed to convert MKV to MP4 on Mac. This post offers 2 solutions for you to convert MKV to MP4 on Mac.

Part 1: How to Convert MKV to MP4 on Mac with Leawo Video Converter for Mac

Though there’re quite a few free video converters for Mac, including free online video converters, most of these free Mac video converters are hard to use or are limited in format supported. Leawo Video Converter for Mac, on the contrary, is a professional Mac based video converter that could help you easily convert MKV videos to MP4 videos on Mac (El Capitan included) in only a few clicks with mutiple subtitles and audio tracks included. By converting, it easily allows you to edit MKV videos in iMovie or FCP, play MKV videos in iTunes or QuickTime. Download and install Leawo Video Converter for Mac on your Mac, and follow the step-by-step guide below to convert MKV to MP4 on Mac. (If you’re using Windows computer, you could download and install the Windows version of Video Converter from Leawo. You could check how to convert MKV to MP4 on Windows for details.)


Guide on how to convert MKV to MP4 on Mac with Leawo Video Converter for Mac:

Step 1: Import source MKV video files


Launch Leawo Video Converter for Mac to enter the main interface. Under the “Convert” module, click the “Add Video” button or directlry drag source MKV video files into this MKV to MP4 converter Mac. You could get all information on the left processing list, import multiple MKV video files for batch MKV to MP4 conversion, edit loaded MKV video files, add 3D effect, etc.

Step 2: Set MP4 as output format


After importing source MKV files, click the drop-down box before the big green “Convert” button and then select “Change” option to enter the Profile window for output format setting. To convert MKV to MP4, you need to open “Format > Common Video” group to select MP4 as output format.


Optional: If you’re not satisfied with the video and audio parameters of preset output format like video codec, bit rate, aspect ratio, quality, frame rate, audio codec, audio quality, audio bit rate, sample rate and channel, you could reset them. After setting output format, re-open the drop-down box and then select “Edit” option to enter the Profile Settings panel. On the Profile Setting panel, you could freely set the parameters.

Step 3: Set output directory


When all the format settings are finished, save the settings and return to the main interface. Click the big green “Convert” button on the main interface to set output directory on the popup sidebar. You could open “Save to” box to browse desired folder as output directory.

Step 4: Convert MKV to MP4 on Mac


At last, start converting MKV to MP4 on Mac by clicking the bottom “Convert” button on the sidebar.

Part 2: How to Convert MKV to MP4 on Mac with Free Online File Converter

If you prefer a free MKV to MP4 converter Mac for converting MKV to MP4 Mac, you can try an online file converter. Usually, online video converter is free of charge, such as Convert.Files Online. On the page of Convert.Files, you are allowed to convert MKV to MP4 Mac free. Check out the steps below.

  • Step 1: Click “Browse” button to choose source MKV file for converting
  • Step 2: Choose “MPEG-4 Video File(.mp4)” as output format
  • Step 3: Click “Convert” button at the bottom to start uploading, and then converting
  • Step 4: After converting finishes, you need to download the converted file by visiting a page given.

Part 3: Leawo Video Converter for Mac vs. Free Online File Converter

Online MKV to MP4 converter does allow users to convert MKV to MP4 free, but it requires files uploading and downloading, which means you need to access to internet when you are using an online MKV to MP4 converter. It is probable that your video content will be exposed to the public, which will cause privacy leak. Video converter program, on the other hand, is much safer in protecting users’ privacy. Let’s take a look at a thorough comparison between Leawo Video Converter and Convert.Files Online.

Features Leawo Video Converter Convert.Files Online
Easy to use
Supported input file formats
  • Audio: FLAC, AAC, AC3, AIFF, AMR, M4A, MP2, MP3, OGG, RA, AU, WAV, WMA, MKA
Video: mp4, mkv, m2ts, mts, flv, avi, mov, wmv, asf, vob, m4v, mpeg, 3gp, etc.
Supported output file formats
  • Audio: FLAC, AAC, AC3, AIFF, AMR, M4A, MP2, MP3, OGG, RA, AU, WAV, WMA, MKA
  • 3D video formats: 3D MP4, 3D WMV, 3D AVI, 3D MKV, 3D YouTube video, etc.
  • Common video formats: MP4-AVC, MP4-XviD, MP4-H.264, AVI, ASF, WEBM, MOV, RMVB, FLV, F4V, TS, DAT, WMV, MKV, XviD, DV, MPEG-1 NTSC, MPEG-1 PAL/SECAM, MPEG-2 NTSC, MPEG-2 PAL/SECAM, DVD-Video NTSC, DVD-Video PAL/SECAM, 3GP, 3G2, DPG
  • Video: AVI, VOB, MPEG, FLV, MP4, MOV, 3GP, WMV, MKV, etc.
  • Audio: WAV, WMA, MP3, OGG, M4A, AAC, etc.
Conversion speed very fast very slow
Batch conversion
Adjust video and audio parameters like Video Frame Rate, Encoder, Bitrate; Audio Sample Rate, Channels, Encoder, Bitrate
Internal video player
Internal video editor available, allows users to trim video length, crop video size, add watermark, and adjust video effect
Add 3D effects to 2D video
Extract audio from video file
Take screenshot
Add subtitles and audio tracks
Supported OS Mac (32-bit or 64-bit) 10.6 Snow Leopard, 10.7 Lion, 10.8 Mountain Lion, 10.9 Mavericks, 10.10 Yosemite, 10.11 El Capitan all operating system
Windows version
Limitation None convert up to 250 MB size, cannot convert DRM-protected files, cannot convert multi-volume files
Price $29.95 free

Extension: Convert MKV to MP4 with Free MKV to MP4 Converter – HandBrake

There are many free MKV to MP4 converter programs available for you to convert MKV to MP4 free. Among them, I prefer HandBrake to others. HandBrake is a free and open-source tool for converting video from nearly any format to a selection of modern, widely supported codecs. It accepts all kinds of video formats and outputs video file of MP4 or MKV format, which means it can convert MKV to MP4 for free. What’s more, it is easy to convert MKV to MP4 with HandBrake as the free MKV to MP4 converter has an easy-to-operate program interface. Follow the instructions below to convert MKV to MP4 with HandBrake.

Guide on how to convert MKV to MP4 with HandBrake:


Step 1: Import source MKV video files

Open HandBrake to enter the main interface, where you need to click “Source” and then select “File” to browse and import source MKV file.

Step 2: Set destination file and output format

After the importing of source MKV file, you will be returned to the main interface of HandBrake, where you need to click “Browse” to specify output directory and choose “MP4” as container under output settings.

Step 3: Start to convert MKV to MP4

Click “Start” on the sub-menu bar to start converting MKV to MP4.