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MKV to AVI Converter Online

Convert MKV to AVI online in your browser, then switch to the desktop app when you need faster, more stable conversion for big batches. Fix playback issues on old TVs, DVD players, and editing software with a few clicks.

For more powerful MKV to AVI conversion needs, UniConverter Desktop gives you much more:

  • Convert MKV to AVI in batch and save time on large files
  • Enjoy up to 130× faster conversion speed
  • Support for 1,000+ audio/video/image formats
  • An all-in-one toolkit including editing, enhancement, and more
Batch Convert MKV to AVI
Batch Convert MKV to AVI
Batch Convert MKV to AVI

How to Convert MKV to AVI without Losing Too Much Quality

upload mkv video file
Step 1

Import Your MKV File

Open the MKV to AVI converter in your browser or launch the desktop software on Windows or Mac, then upload or import the MKV video you want to convert. Online conversion is convenient for quick tasks, while the desktop version is a better choice for large files, offline use, or converting multiple videos at once.

choose avi as output format
Step 2

Select AVI Output and Adjust Quality Settings

Choose AVI as the target format whether you convert MKV to AVI online or on desktop. You can keep the default profile for a fast conversion, or use the desktop converter to adjust codec, resolution, bitrate, and frame rate for a better balance between video quality, file size, and playback compatibility.

save converted avi video
Step 3

Convert, Save, and Check the AVI File

Start the MKV to AVI conversion and save the finished file once processing is complete. Download the AVI video from the online converter or open it from the desktop output folder, then test playback on your device or media player to make sure the quality and compatibility meet your needs.

MKV vs AVI: Compatibility and When to Convert

MKV
AVI
File Extension .mkv .avi
Full Name Matroska Video Audio Video Interleave
Description MKV is a flexible container format that can hold multiple audio tracks, subtitles, and chapters in one file, often used for HD movies, TV shows, and anime downloads from the web. AVI is an older but still widely recognized container format that many legacy TVs, DVD players, portable media players, and basic editing tools support better than modern containers like MKV.
Associated Programs VLC media player, MPC-HC, KMPlayer, PotPlayer, Plex, Kodi Windows Media Player, VLC media player, VirtualDub, Adobe Premiere Pro, many hardware media players
Initial Release 2002 1992
Developer Matroska.org Foundation Microsoft
Common Use Cases High-quality video distribution, multi-audio releases, embedded subtitles, archiving Blu-ray rips, streaming library collections Playback on old TVs and DVD players, compatibility with legacy editors, simple video sharing where MKV support is limited
MIME Type video/x-matroska video/x-msvideo

Why Use UniConverter MKV to AVI Converter

Online MKV to AVI converter with no installation

Quickly convert MKV to AVI online for free directly in your browser. Upload a single MKV file, pick AVI as output, and download the converted video without installing software or creating an account.

Safe online conversion with temporary file storage

Your MKV and AVI files are transferred over secure connections, processed on our servers, and kept only for a limited time before automatic deletion. This online converter is designed to avoid adware, bundled installers, or hidden extras.

Broad AVI compatibility for old TVs and players

Create AVI files that work on many legacy devices and media players, helping you watch MKV movies from USB on older TVs, DVD players, or simple set‑top boxes that cannot handle modern MKV containers properly.

Desktop MKV to AVI converter with batch processing

Use the desktop application when you need to convert multiple MKV files to AVI at once. Import entire folders, queue dozens of videos, and let the program batch convert them while you do other tasks on your computer.

Advanced output settings on desktop for quality control

Fine‑tune AVI export parameters in the desktop converter, including video resolution, bitrate, codec, frame rate, and audio settings. Adjust these options to reduce file size, preserve more detail, or meet specific editing software and device requirements.

More stable than VLC or command line workflows

Avoid confusing VLC profiles or complex ffmpeg commands when converting MKV to AVI. Both the online tool and the desktop app provide a guided interface that reduces failed conversions and keeps the process straightforward for everyday users.

Batch Convert Now
Convert Online
Batch Convert Now
Convert Online
Batch Convert Now
Convert Online

MKV to AVI Conversion FAQs

Any MKV to AVI conversion that re-encodes video will cause some quality loss, but you can keep it minimal. Use a high bitrate and the same resolution in a desktop MKV to AVI converter, avoid unnecessary resizing, and choose good codecs. Online tools focus more on convenience than perfect quality preservation.
Many older TVs, DVD players, portable devices, and some editing programs still handle AVI more reliably than MKV. Converting MKV to AVI helps fix playback errors, black screens, or import issues. It is not about AVI being better overall, but about meeting legacy compatibility requirements for specific hardware and software.
VLC can convert MKV to AVI, but users often report that the process is confusing or fails silently. Files may stay in MKV or produce broken output. A dedicated MKV to AVI converter, either online or desktop, gives clearer presets, progress feedback, and higher success rates, especially for long videos and multiple files.
On Windows 10 or Mac, you can either use an online MKV to AVI converter in your browser for quick one-off tasks, or install a desktop program for frequent use. Open the tool, add MKV files, select AVI as output, tweak settings if needed on desktop, then start conversion and save the resulting AVI videos.
AVI is an older container and not ideal for streaming or advanced features, but it is still useful where hardware only understands AVI. If your TV, DVD player, or editor demands AVI, converting from MKV is practical. For modern devices and online platforms, MKV or MP4 usually offer better flexibility and efficiency than AVI.

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— TG

“I have been using Wondershare UniConverter for many years. It has been one of the best ways to download, screen capture and convert videos. It has been my go to for video download and conversion.”

— Alan Horner

What Users Say About Our MKV to AVI Converter

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Rated 4.9/5
Based on 1,643 reviews
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Start Your MKV to AVI Conversion Now

Upload an MKV file to convert it to AVI online in seconds, or install the desktop app for faster batch jobs and advanced settings. Fix playback issues on old devices today without complicated tools.
Batch Process Now Upload MKV File
Batch Process Now Upload MKV File
Batch Process Now Upload MKV File
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