Are you tired of having your AVI videos not playing on certain devices or platforms? Or maybe you’re looking to compress your video files without losing quality? Whatever the reason, converting from AVI to MKV could be the solution you’ve been searching for.

In this ultimate guide, we’ll take a deep dive into everything you need to know about converting AVI to MKV. We’ll start by covering the basics of both file formats, followed by exploring the most popular AVI to MKV converters.

 Convert AVI to MKV

Why Convert AVI to MKV?

AVI and MKV are both video file formats. MKV is more versatile and can handle multiple types of codecs, subtitles, chapters, and metadata. There are several reasons why you might want to convert your AVI files to MKV.

For one, MKV files generally have better video quality than AVI files because they support higher bitrate encoding, which means less compression. If you have a device that does not support AVI files, converting them to MKV can allow you to play them without any issues.

Comparison between AVI and MKV

MKV shows significant advantages in terms of quality, subtitles, multiple audio tracks, error recovery, support for modern video codecs, metadata support, and streaming ability, which makes it an excellent choice if the playback device or software supports this format.
File Size and Quality Large file sizes, potentially with quality loss. Better quality-to-size ratio, MKV files can maintain high quality with smaller file sizes.
Subtitle Support NA YES
Multiple Audio Tracks NA YES
Compatibility Outdated and limited Widely supported
Error Recovery Ability Limited. If the AVI file gets corrupted, most of the data is lost. Strong. When an MKV file is partially downloaded or corrupted, the player can still play it till the point of corruption.
 H264 & H265 Codec Support NA YES
Metadata Support Minimal. Does not handle metadata well. Ample. MKV supports a large amount of metadata and allows the user to specify custom metadata as well.
Streaming Less suitable for streaming due to larger file sizes and less efficient video compression. More suitable for streaming due to its ability to handle size-efficient, high-quality video.

Top 10 Popular AVI to MKV Converters

Considering that MKV is much more popular, converting AVI to MKV free for playback on different devices will be of great significance. The following will introduce the best AVI to MKV converters in the market.

1. UniFab Video Converter

avi to mkv Converter: unifab video converter

UniFab Video Converter

With the professional video converter, you can effortlessly convert avi videos to mkv format which is supported by various devices and video players. 

Key Features:

  • Convert AVI videos to MP4 format without quality loss
  • Over 1000+ video and audio formats are supported to be converted
  • Except for MP4, you can output avi videos in MKV/AVI/M2TS/FLV, etc
  • Offer a built-in video editor to customize videos based on your needs
  • Convert multiple videos with the Batch Mode fastly and easily
Step 1

Install and launch UniFab Video Converter on your device first.

Step 2

Select the 'Converter' module, and add the AVI video you want to convert into UniFab.

avi to mkv Converter: unifab video converter

Step 3

Choose MP4 as the output format. You can also customize the video ratio, codec, resolution, etc.

avi to mkv Converter: unifab video converter

2. Freemake Video Converter

Freemake Video Converter is a free video conversion software that can convert video files, DVDs, pictures, and other types of files into different formats. This AVI to MKV converter supports a wide range of input formats and can convert these files into popular output formats like MP4, AVI, MKV, WMV, MP3, DVD, 3GP, etc.

In three steps you can convert AVI to MKV with Freemake Video Converter. First of all, download and install the software on your computer system, add an AVI file, choose the output format as MKV, and click Convert. That’s it.

Freemake AVI to MKV Video Converter

main features
  • Apart from AVI to MKV, it supports plenty of other file formats as well
  • You can download streaming videos from YouTube
  • It can extract audio from YouTube Videos
  • Various editing and customizing features are available for output video

3. Handbrake

Another good free AVI to MKV converter is Handbrake, which is an open-source, multi-platform software used for converting video from nearly any format to a selection of modern, widely supported codecs. It’s free and easy to use. However, its main drawback is the conversion process is very slow as compared to other similar tools.

HandBrake AVI to MKV Converter

4. Any Video Converter

Any Video Converter is a versatile tool that lets you convert AVI to MKV as well as other popular formats. It has a user-friendly interface and supports batch processing. However, the free version includes watermarks and limited features.

Any Video Converter AVI to MKV Converter

5. VLC Media Player

VLC is a popular media player that also doubles as a video converter. It supports a wide range of formats, including AVI and MKV, and offers advanced options for experienced users. However, the conversion process can be slow.

AVI to MKV Converter

6. Wondershare UniConverter

Wondershare UniConverter is a paid video converter that supports both Windows and Mac platforms. It offers a simple and easy-to-use interface with advanced options for experienced users. However, the price may be a bit steep for some users.

AVI to MKV Converter

7. XMedia Recode

XMedia Recode is a free video converter that supports a wide range of formats, including AVI and MKV. It offers advanced options for experienced users, but the user interface may be overwhelming for beginners.

AVI to MKV Converter

8. Movavi Video Converter

Movavi Video Converter is a paid software that supports both Windows and Mac platforms. It offers a simple and intuitive interface and supports a wide range of formats, including AVI and MKV. However, the price may be a bit steep for some users.

AVI to MKV Converter


If you're seeking to convert an AVI file to MKV format or MPG to MP4 format without downloading any software, consider using an online converter like 

On this page, upload your desired AVI file. Depending on its size, uploading may take some time. Once uploaded successfully, adjust settings as per your preference and initiate the conversion by clicking "Start Conversion". The duration of this process will vary based on your file's size. However, please note that one drawback of online converters is their dependence on upload times.

online avi to mkv converter


One more Online video converter is, which can easily convert AVI to MKV for free but the same issue is you have to wait for the input file to be uploaded to its server, and then the conversion will be done. Then, again you have to download the output file. However, this online converter may have annoying ads.

online avi to mkv converter


with the right tools and knowledge, anyone can convert their AVI files to MKV format without sacrificing video quality or losing information. We hope that this ultimate guide has provided valuable insights and tips for those seeking to make the switch from AVI to MKV.