MKV
AVI to MKV
Convert AVI videos to MKV. It’s free, works in your browser, and your files are never uploaded.
How to use AVI to MKV
- Add your file by dragging it in or choosing it.
- Choose your options.
- Click “Convert” and download the result.
Why use AVI to MKV on Free File Converter Fox
- Private. Files are processed on your device and never uploaded.
- Free. No account, watermark or daily limit.
- Fast. No upload or download wait, since everything runs locally.
Frequently asked questions
Is AVI to MKV free?
Yes. AVI to MKV on Free File Converter Fox is free, with no sign-up, watermark or daily limit.
Is my file uploaded to a server?
No. AVI to MKV runs entirely in your browser, so your files stay on your device and are never sent to us.
What’s the difference between AVI and MKV?
AVI is an older Windows video container. MKV is a flexible container often used for high-quality video.
What should I do if AVI to MKV fails?
Try a smaller file, reload the page, or use a current version of Chrome, Edge, Firefox or Safari. Very large files can run out of memory, especially on phones.
Can I process several files at once?
Yes. Add multiple files, then download each result or all of them together as a ZIP.