How to convert MKV to MP4, AVI for Free

Convert MKV to MP4 or to AVI free & fast! Free MKV to MP4/AVI Converter can change your Matroska file to MP4 (.mp4) or AVI (.avi) in high definition. Watch your movies on any TV, PC, iPhone, Android, and other mobile devices. HD, Full HD & 4K quality supported. 250+ ready MKV conversion presets. 100% free download!
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Why you should try the tool:
1. Download free MKV to MP4, AVI converter
2. Add MKV files
3. Click "to AVI" or "to MP4"
4. Set final file parameters
5. Convert MKV video to AVI or MP4

See how to convert MKV to AVI or MP4 for free:


Download MKV to MP4, AVI Converter

Looking to convert MKV w/o quality loss? Save the Freemake file on your PC and double-click to run it. The freeware from the official developers' website can be launched on Windows PCs and laptops only. The supported OS versions are Vista, 7, 8, and 10. Please note that there is no official Mac version. Follow the installation procedure up to the end. You might simply click the Next button all the time.

Add MKV files

You may transform any Matroska files, even with subtitles. Start free Freemake MKV to MP4/AVI converter. Alternatively, you can click the "+Video" button and select the necessary clips from your PC. Add multiple video files at once and convert MKV to AVI in batch. Please note that large MKV files should be converted one by one. Only MKVs with h264 codec are supported.

Choose AVI, MP4 or other format

Freemake offers dozens of conversion options. Make up your mind what output format option is the best for the future films. It depends on a device you will use to play the files (Apple, Samsung, Sony or others). We recommend choosing MP4 container for portable gadgets and AVI for desktop and TVs.

Adjust video specs to your needs

Leave everything as is, if you don’t want to deal with settings. In case you want to control everything, click on the drop-down menu to see available ready options. Pay attention to the right column to understand what is the difference between them. You’ll also find a custom preset at the bottom of the menu. If you click it, you’ll be able to select personalized settings such as frame rate, bitrate, codec (MPEG4 or DivX), frame size, audio parameters, and so on.

Whether you plan to convert MKV to AVI or MP4 for the same device, you can save your preset for future use.

Convert MKV video to AVI or MP4 fast

Launch MKV to MP4 or AVI conversion when everything is ready. Set the destination folder for your new video and click the blue “Convert” button. The converting procedure may take some time depending on how powerful and thus how fast your computer is.

As soon as the process finishes, go and check your new file. For example, you may use KMP or VLC player to watch it. Or transfer the movies to USB drive to play MKVs on TV.

This guide is valid for any Matroska movies. However, if you have an HD file, you might also be interested in how to convert HD videos for free.