Free online AVI to MKV converter

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How to convert avi to mkv file

June 7, 2026
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This might be one of the most common conversion requests supported by most modern video editors and converters. That means it is not only possible, but also fairly simple to convert Audio Video Interleave Files directly to Matroska Video Files (.avi to .mkv conversion).

Choose among numerous tools, such as Free Studio or MediaCoder. These programs allow users to import AVI files and re-save them in MKV format.

Keep in mind that the quality of the resulting file will not improve through such conversion, since AVI files are typically heavily compressed.

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Understanding AVI and MKV file formats

AVI (Audio Video Interleave) is a multimedia container format introduced by Microsoft. It is widely used for storing video and audio data, allowing synchronous audio-with-video playback. AVI files can contain both audio and video data in a file container that allows synchronous audio-with-video playback.

MKV (Matroska Video) is an open-source container format that can hold an unlimited number of video, audio, picture, or subtitle tracks in one file. It is often used for high-quality video content and supports features like multiple audio tracks and subtitles.

Why convert AVI to MKV?

Converting AVI to MKV can be beneficial for several reasons. MKV files often provide better compression without losing quality, support for multiple audio tracks and subtitles, and are more compatible with modern media players and devices.

Best software for converting AVI to MKV

One of the best software options for converting AVI to MKV is HandBrake. It is a free, open-source transcoder for digital video files. HandBrake supports a wide range of formats and is available for Windows, Mac, and Linux.

How to convert AVI to MKV using HandBrake

Download and install HandBrake from the official website.
Open HandBrake and click on File to select the AVI file you want to convert.
Choose the destination folder where you want to save the converted file.
Select MKV as the output format from the Format dropdown menu.
Adjust any additional settings as needed, such as video codec, quality, and audio tracks.
Click on Start Encode to begin the conversion process.

Alternative converters

Other popular converters include FFmpeg, a command-line tool that is powerful and flexible, and Any Video Converter, which offers a user-friendly interface and supports a wide range of formats.

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AVI vs MKV: format comparison

How the AVI and MKV formats compare on the properties that matter most for this conversion.

Comparison of the AVI and MKV file formats
Property	.AVI Audio Video Interleave	.MKV Matroska Video
Format type	Container	Container
Compression	Both	Both
Maximum resolution	8K and above	8K and above
Audio tracks	Multiple	Multiple
Subtitles	Embedded in the file	Embedded in the file
Streaming	Partial	Partial
Opens in a web browser	No	No
Typical file size	Large	Large
Open standard	Partly open	Yes
Introduced	1992	2002
Developer	Microsoft	Matroska org
MIME type	video/x-msvideo	video/x-matroska

Open AVI file Open MKV file

Suggested software and links: avi to mkv converters

4Free Video Converter

A free video conversion utility

4Media Video Converter

A video converting tool

Aimersoft Video Converter

A multimedia conversion utility

Any Video Converter Free

A free video converter

AviDemux

A free video editor and video converter

AVS Video Editor

A video editing software

ConvertXtoDVD

A video conversion and burning software

FFmpeg

A complete and cross-platform solution to record, convert and stream audio and video.

Free Studio

All-in-one package of DVDVideoSoft utilities and converters

Freemake Video Converter

One of the most popular and successful free video conversion software

HandBrake

A free multiplatform multimedia transcoder and video converter.

HDConvertToX

A video converter utility

Icecream Media Converter

A multimedia converter

iVI - iTunes Video Importer

A multimedia importer for iTunes

MediaCoder

A free universal media transcoder for Windows and Linux. Convert between most popular audio and video formats.

Miro Video Converter

A free video converter offering high-quality conversions between many video formats

Movavi Video Converter

A fully-featured video conversion program

Nero Recode

A multimedia converting tool for Windows

Smart Converter

A video conversion software for macOS / OS X

SUPER

A free universal media, audio & video converter

Transcoder

A free video converter for Linux

VSDC Video Editor

A free video editing software for Windows

Wondershare UniConverter

A digital video converter for Windows

Xilisoft iPhone Ringtone Maker

A iPhone ringtone creator for both Mac and Windows

Frequently asked questions

Is the AVI to MKV converter free?

Yes, converting AVI to MKV on 101convert.com is completely free. No registration, email address or installation is required.

How large can my AVI file be?

You can upload AVI files up to 2000 MB and convert up to 1 files at once in a single batch.

What happens to my uploaded files?

Files are processed automatically and deleted from our servers within a few minutes after conversion. We never view or share your files.

Do I need to install any software to convert AVI to MKV?

No. The AVI to MKV conversion runs entirely online in your browser and works on Windows, Mac, Linux, Android and iPhone.

Did the conversion fail?

In most cases, the cause is an incorrect file format. Please upload a valid AVI file for this AVI to MKV conversion. Occasionally, the issue may be on our side. We analyze recurring conversion failures and disable or fix the converter if we detect a defect.

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