Convert AVI to MKV
Free, instant, and secure online converter. Upload your .avi file and receive a crisp .mkv result in seconds.
Need the opposite conversion? Convert MKV to AVI →
How to convert AVI to MKV
Upload Your File
Click the upload zone or drag and drop your .avi file anywhere on the area.
Start Converting
Hit Convert and our server will process your file instantly with high fidelity preservation.
Download Result
Your .mkv file is ready in seconds! Click download. Files auto-delete in 6 hours.
AVI vs MKV: Comparison
| Attribute | AVI (.AVI) | MKV (.MKV) |
|---|---|---|
| Category | video | video |
| MIME Type | video/x-msvideo | video/x-matroska |
| Description | AVI is a classic Windows video container format known for high compatibility with older software. | MKV (Matroska) is an open-source container that can hold virtually unlimited video, audio, and subtitle tracks... |
About These Formats
About AVI files
AVI is a classic Windows video container format known for high compatibility with older software.
About MKV files
MKV (Matroska) is an open-source container that can hold virtually unlimited video, audio, and subtitle tracks.
Frequently Asked Questions
How do I convert AVI to MKV?
Upload your .avi file using the box above, or drag and drop it in. We'll automatically convert it to .mkv format — just click download when it's ready.
Is it free to convert AVI to MKV?
Yes. Converting AVI to MKV is completely free, with no watermarks, no signup, and no limit on how many files you convert.
Is it safe to convert files here?
Yes. Files are processed securely and automatically deleted from our servers a few hours after conversion. We never share or view the contents of your files.
What is a avi file?
AVI is a classic Windows video container format known for high compatibility with older software.
What is a mkv file?
MKV (Matroska) is an open-source container that can hold virtually unlimited video, audio, and subtitle tracks.