AVI
→
MKV

Convert AVI to MKV Online

Convert AVI to MKV online. Start with free daily conversions, no install, no watermarks, and visible job status.

AVI to MKV Converter

Upload your AVI file to convert it to MKV format

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How to Convert AVI to MKV

Follow these simple steps

1

Step 1: Upload Your File

Upload your AVI file by dragging and dropping or clicking to browse

2

Step 2: Select Output Format

MKV is automatically selected as the output format

3

Step 3: Start Conversion

Click the Convert button to start the conversion

4

Step 4: Download Result

Download your converted MKV file when ready

Convert AVI to MKV - Complete Guide

Converting AVI to MKV stays in the video file family but changes the traits that decide size, quality, transparency, editability, or device support. AVI is a legacy video container format used by Windows tools and older media workflows. MKV is a flexible video container format often used for high-quality video, subtitles, and multi-track media. Below is what actually changes in a AVI→MKV conversion, what is preserved, and when MKV is the better choice than keeping AVI.

What changes when you convert AVI to MKV

  • The video is re-encoded into the MKV format. Because re-encoding is not free, start from the highest-quality source you have and keep quality settings high.

About the AVI format

AVI (Audio Video Interleave) is a classic video format developed by Microsoft. While widely compatible, modern formats offer better compression. Our converter updates your AVI files.

  • Full name: Audio Video Interleave
  • Developer: Microsoft
  • Compression: Various (DivX, XviD, uncompressed)
  • Opens with: VLC, Windows Media Player

Where AVI is strong: plays in legacy Windows tools; can store high-quality or uncompressed video.

Typical AVI uses: legacy Windows video, older editing workflows.

About the MKV format

MKV (Matroska Video) is a flexible container format that can hold multiple video, audio, and subtitle tracks. Our converter extracts and transforms MKV content.

  • Full name: Matroska Video
  • Developer: Matroska.org
  • Compression: Various (H.264, H.265, VP9)
  • Opens with: VLC, Plex, MKVToolNix

Where MKV is strong: stores multiple audio, video, and subtitle tracks; flexible, high-quality container.

Typical MKV uses: high-quality video libraries, multi-track and subtitled video.

What MKV keeps

  • MKV adds: stores multiple audio, video, and subtitle tracks.

Things to watch out for

  • One MKV limitation to keep in mind: not natively supported by browsers or many devices.

When to convert AVI to MKV

  • Convert AVI to MKV for high-quality video libraries.
  • Convert AVI to MKV for multi-track and subtitled video.
  • Pick MKV when you need flexible, high-quality container.

AVI vs MKV — format comparison

A quick side-by-side of the structural differences between AVI and MKV, so you can confirm this is the right conversion for your file:

AttributeAVIMKV
TypeVideo fileVideo file
CompressionFlexible (lossy or lossless)Flexible (lossy or lossless)
Web-friendlyNoNo
Typical file sizeLargeLarge
Best forlegacy Windows videohigh-quality video libraries

Privacy & Security

Files are handled for the conversion you request. Uploads and downloads use HTTPS/TLS, and temporary files are cleared after the processing and deletion window.

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Need the opposite conversion?

Convert MKV to AVI

Other AVI Conversions

More formats you can convert AVI to

Convert AVI to MP4Convert AVI to WEBMConvert AVI to MOVConvert AVI to MP3Convert AVI to FLVConvert AVI to WMVConvert AVI to 3GPConvert AVI to MPEGConvert AVI to MPGConvert AVI to TSConvert AVI to OGVConvert AVI to 3G2Convert AVI to ASFConvert AVI to M4VConvert AVI to AACConvert AVI to WAVConvert AVI to OGGConvert AVI to FLACConvert AVI to M4AConvert AVI to WMAConvert AVI to AIFFConvert AVI to OPUS
View all AVI conversions →

Convert to MKV

Other formats you can convert to MKV

Convert MP4 to MKVConvert MOV to MKVConvert WEBM to MKVConvert M4V to MKVConvert FLV to MKVConvert WMV to MKVConvert 3GP to MKVConvert 3G2 to MKVConvert MPEG to MKVConvert MPG to MKVConvert TS to MKVConvert MTS to MKVConvert M2TS to MKVConvert VOB to MKVConvert OGV to MKVConvert ASF to MKV
View all MKV conversions →

Popular Related Conversions

Convert AVI to MP4Convert AVI to MP3

AVI to MKV FAQ

Converting AVI to MKV preserves the content faithfully; output also depends on the source file and any settings you choose.
Upload your AVI file, confirm MKV as the output format, and click Convert. Job status is shown while the file is processed, then you can download the MKV result.
Yes. You can start with free daily conversions, with no signup required for your first jobs and no watermarks on the output. Accounts and paid plans are available for higher-volume work.
No. The AVI to MKV conversion runs in your browser on any device — Windows, Mac, Linux, iOS, or Android — with uploads and downloads over HTTPS.
AVI (Audio Video Interleave) is a video file format. AVI files can be played with various video players and media applications.
Upload your AVI video to the converter, select your desired output format, and click Convert. The job status appears while the video is processed.
You can start with free daily conversions. Accounts and paid plans are available for higher-volume work, and downloaded files are not watermarked.
You can convert AVI to proof-backed video containers such as MP4, WEBM, MOV, AVI, MKV, FLV, WMV, 3GP, OGV, ASF, plus audio outputs like MP3, WAV, AAC, FLAC, M4A, WMA, AIFF, and OPUS.
Yes! Our AVI converter works on any device including smartphones and tablets.
Choose the output setting that fits your file-size and playback needs. Re-encoding can change quality depending on codec and bitrate.

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