Convert MKV to MP4 online


Convert to

Added files

How to Convert MKV files to MP4 Online?

MKV is a container format that lets you store video, audio, and subtitles in a single file. It’s widely used, since the format can retain HD video quality. But due to holding multiple tracks in one file and the high video resolution, MKV files can get very large. Additionally, some media players and portable devices can’t play this format back. To free up disk space and make sure your movies will open on most players, try converting your files to a more popular format, such as MP4.
If you need to change the file format without losing quality, but don’t want to install any potentially risky freeware, then convert MKV to MP4 online. Try our web service – it’s completely free and allows you to transcode files not only from your computer, but also from cloud storage. Read the guide below to learn how to use the MKV-to-MP4 converter for free.
Add your MKV file for encoding.
Choose MP4 as the target format.
Click the Convert button.

Supported Output File Formats


Your file is too large or you need to handle multiple files at once? See other options we offer!


Online Converter – Free

  • No charge
  • Limited file size
  • 17 input and output media formats

Online Converter – Subscription

  • Daily or monthly payments
  • Larger file size
  • 17 input and output media formats
  • Online storage
  • Free trial
  • Unlimited file size
  • Batch conversion
  • 180+ input and output media formats

How to Convert from MKV to MP4 on Mac and Windows?

If you want to transfer batches of files from MKV to MP4 in one pass, the fastest way is to use offline desktop software. We recommend you try SuperSpeed Video Converter. With this app, the process of conversion is fast and easy thanks to the user-friendly interface. Download the converter for Windows or Mac and follow the guide below to learn how to convert MKV to MP4.

Step 1.Install and Run the Program

Download the installation file and install the app on your PC or Mac following the onscreen instructions. When the installation is complete, click the Start button to launch the program.

Step 2.Add Files to the Converter

Click the Add Media button in the top left of the program window and choose Add Video. In the window that opens, select the files with the .mkv extension and click Open. You can also simply drag and drop files into the program window.

Step 3.Set the Output Format

To turn your files into MP4s, first set the output format. Open the Video tab, find the MP4 format group, and choose the appropriate preset from the list.

Step 4.Encode MKV to MP4

If you want to rename the video, click the Pencil icon near the file name. To change the destination folder, click the Folder icon in the bottom right of the program window. To start transcoding your videos, click the Convert button.

Now you know the best way to transform MKV video files into MP4. With SuperSpeed Video Converter, you can also remux MKV videos with sound, quickly compress large files, and much more!