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3 Ways to Convert MKV to AVI (Incl. Free and Online Solutions)

Updated on Jun 5, 2026

This article will teach you how to perform MKV-to-AVI conversion to meet your various needs. Specifically, you’ll learn how to convert MKV to AVI without losing quality (and keeping subtitles), how to convert MKV to AVI format for free, and how to turn short MKV clips into AVI files online.

👉 Install the best MKV to AVI converter for Windows:

https://www.videoconverterfactory.com/download/hd-video-converter-pro.exe hd-video-converter-pro.exe

◆ Method 1: Convert MKV to AVI without Losing Quality

◆ Method 2: Convert MKV to AVI for Free

◆ Method 3: Convert MKV to AVI Online (Suitable for Small Files)

Although MKV is a popular container format that can combine video, audio, and subtitle tracks into a single file, it often faces compatibility issues on devices such as Samsung TVs, tablets, and the PlayStation 4. In such instances, you might consider converting MKV files to a more broadly compatible format, such as AVI.

Below, I will share three different methods to help you convert MKV videos to AVI format for a variety of purposes. Please read on.

Method 1: Convert MKV to AVI without Losing Quality

WonderFox HD Video Converter Factory Pro. is what I recommend most to help you convert MKV to AVI while preserving high video quality, as it can excellently handle videos up to 8K and also maintain good final clarity when downscaling videos if you need to balance quality and file size.

Besides converting MKV to AVI, the powerful video converter provides many more output options, including MP4, MOV, and MP3, and even offers optimized presets for devices like Samsung TVs, LG TVs, and game consoles. It also gives you much flexibility to adjust video settings such as codec, resolution, bitrate, frame rate, aspect ratio, audio tracks, and subtitles. If your MKV file contains subtitles, directly converting it to AVI will lose them all. But with this software, you can burn them into the video during conversion.

Professional as it is, it’s super easy to use. And the whole process takes just a few clicks. Download Download this software now to see how to change MKV to AVI in the best way below:

Step 1: Add Your MKV Files

Open the software and choose “Converter” on the home interface. Add your MKV files by clicking the “Add Files" or "Add Video Folder” button in the top left of the window. Alternatively, you can drag and drop the MKV files directly into this program.

Step 2: Set AVI as the Output Format

Click the "Click to change output format" area on the right of the main interface and choose "AVI" under the "Video" tab.

Optional Step: Adjust AVI Settings

For more advanced needs, you may open “Parameter settings” to adjust the encoder, resolution, bit rate, and more as desired. For instance, you can select “H264” as the video encoder to ensure that the resulting AVI file offers optimal compatibility.

If you wish to convert MKV to AVI and keep subtitles, just select the needed track from the Subtitles drop-down menu. The software will burn the subtitles into the video as hard subtitles, so your final AVI file will have subtitles.

Step 3: Start Converting MKV to AVI

Click the ▼ button at the bottom to specify an output folder, then click the "Run" button to start the conversion. TDepending on the file length, this process can take anywhere from a few seconds to several hours.

Method 2: Convert MKV to AVI for Free

If you are simply looking for a free method to convert MKV files to AVI format, you can use the free version of the first software mentioned. This program is called Free HD Video Converter Factory. It can convert MKV to AVI, as well as a wide variety of other formats, with equal ease. It has no limits on file size or duration, nor does it add any watermarks. All in all, it’s a highly practical and useful free video converter for Windows users.

However, compared to the Pro version, its conversion speed is relatively slower, and it does not allow you to manually select the output quality (though you can still convert 8K videos).

Next, let's see how to use this free software to convert MKV files to AVI. Free download Free download the software to get started:

How to change MKV file to AVI for free

Step 1: Launch the software and enter the "Converter" module. (You will notice that the Free version includes only two modules, whereas the Pro version includes five.)

Step 2: Click “Add Files” to add an MKV file to the converter.

Step 3: Click the format icon on the right side, and select "AVI" under the “Video” tab.
💡 You can still edit parameters and adjust subtitle tracks as needed.

Step 4: Choose an output folder at the bottom, then click "Run" to initiate the conversion process.

Method 3: Convert MKV to AVI Online (Suitable for Small Files)

For converting only one or two small MKV files, there’s no need to install specialized software. A more convenient way is to use an online MKV to AVI converter. Such a tool is web-based, and you can access it from any device as long as you have a stable network connection. But you likely know the tradeoff, which is the upload size limit, especially for free users.

Take Zamzar, a leading online file conversion service, as an example. It allows you to convert files up to a maximum size of 50MB. So, this is a viable option only when your files are very small. On the plus side, the conversion won’t take long. You can follow the steps below to use this tool to convert an MKV file to AVI online.

How to Convert MKV Files to AVI

Step 1: Visit Zamzar’s dedicated MKV to AVI service at https://www.zamzar.com/convert/mkv-to-avi/.

Step 2: Click "Choose Files" to upload an accepted MKV file, or just drag and drop a file here.

Step 3: The AVI format is already selected, so just click "Convert Now" to begin the conversion.

Step 4: Download the converted file to your device.

Finally

Converting MKV to AVI is essential to solve compatibility issues. And it’s easy to handle the conversion with the help of the right tools, whether you choose a professional converter like WonderFox HD Video Converter Factory Pro, a free option such as Free HD Video Converter Factory, or an online service like Zamzar. That’s all I want to share ,and I hope this guide is helpful to you. Thanks for reading!

Michelle O'Brien

I write about multimedia topics, including video and audio conversion, compression, editing, and downloading. I joined WonderFox in 2020, and my goal is to help readers solve everyday tech problems more easily. In this article, I have shown you three ways to convert MKV to AVI. Choose the method that suits you to get started!