How to convert MKV to MP4, MKV to AVI Free

Convert MKV to MP4 or MKV to AVI free & fast! Free MKV to AVI / MP4 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 popular mobile devices. HD, Full HD & 4K quality support. 250+ ready presets to convert your MKV file. 100% free download!
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Why you should try the tool:
1. Download & install free MKV to AVI converter
2. Add Matroska files to convert to other file format
3. Click "to AVI" or "to MP4" formats
4. Customize final file parameters
5. Convert MKV to AVI or convert MKV to MP4 format

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.

By default, you download the online installer which takes all the required files from the Internet during the installation. If you need the offline software version, please contact our support team.

Follow the installation procedure up to the end. You might simply click the "Next" button all the time. The software will start automatically straight after the installation of the converter is done.

Add MKV files to convert

You may transform any Matroska media file with h.264 codec. Drag-'n-drop your MKV video files into the free MKV to MP4/AVI converter by Freemake. Alternatively, you can click the "+Video" button and select the necessary media clips from your PC. Add multiple videos at once and change MKV to AVI or MKV to MP4 format in batch. Please note that large Matroska files should be converted one by one. Even MKVs with subtitles are supported.

Choose AVI, MP4 or other format

Freemake tool for Windows offers dozens of conversion options & features. Make up your mind what output format or multimedia container is the best to convert your films to. It depends on the gadget on which you will use to play the files (Apple, Samsung, Sony, or others). We recommend choosing to convert to the MP4 file container for multiple portable gadgets and the AVI output format for desktop and TVs.

Adjust video specs to your needs

Leave everything "as is", if you don’t want to deal with the media settings.

In case you want to control everything, click on the drop-down menu to see available ready options, such as codec, fps, audio codec, etc. 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, h.264, 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.

In case you want to play the webrips on a mobile phone, you are able to convert and reduce their final size to save the phone free space. Before running the conversion, click the weight sign and insert the desirable final video size.

Convert MKV to AVI or convert MKV to MP4

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 video file. For example, you may use KMP or VLC player to watch it. Or transfer the movies to a USB drive to play MKVs on TV.

This guide is valid for any Matroska movies. However, if you have an HD file, you might find it useful to learn how to convert HD videos for free.