filoshi.com / formats / avi-to-mkv

Convert AVI to MKV

Extract audio, compress video, and change codecs natively without uploading. Convert AVI to MKV instantly.

Loading converter…

How to convert AVI to MKV for free

  1. 1
    Drop your AVI file
    Drag it onto the converter above, or click Browse Files to select it from your computer.
  2. 2
    Click Convert
    MKV is auto-selected. Hit Convert - FFmpeg.wasm processes everything locally in your browser.
  3. 3
    Download your file
    Your converted MKV file downloads instantly. Nothing was uploaded to a server.
Source Format

What is AVI?

Audio Video Interleave (.avi) - AVI is a legacy Microsoft format from 1992. It still works but has been largely replaced by MP4 and MKV for most use cases.

Common use: Legacy systems, older hardware

Output Format

What is MKV?

Matroska Video (.mkv) - MKV is an open-source container that can hold virtually any codec, multiple audio tracks, subtitles, and chapters in a single file. It is popular among video enthusiasts.

Common use: Archiving media, storing multi-language video, Blu-ray rips

Frequently Asked Questions

Is converting AVI to MKV free?+
Yes! You can convert AVI to MKV for free right in your browser using Filoshi's online converter. No signup or software download needed. For batch conversion of multiple files, the Filoshi desktop app is available for a one-time $14.90 payment.
Does converting AVI to MKV lose quality?+
It depends on the formats involved. If both AVI and MKV use lossless compression, no quality is lost. If the conversion involves a lossy format, some quality reduction may occur, but Filoshi uses optimized settings to keep quality loss minimal. The conversion runs entirely on your machine, so there are no server-side compression artifacts.
Can I convert AVI to MKV without uploading my file?+
Absolutely. Filoshi processes everything locally on your computer. Your AVI files are never uploaded to any server. Even the free browser converter runs entirely in your browser using WebAssembly, with no server involved.
How long does it take to convert AVI to MKV?+
Most conversions complete in seconds. Larger files (like high-resolution video) may take a bit longer depending on your computer's hardware. Since Filoshi runs locally, there is no upload or download wait time, which is significantly faster than online converters.
Can I batch convert multiple AVI files to MKV?+
Yes, the Filoshi desktop app supports batch conversion. You can drop an entire folder of AVI files, select MKV as the output format, and convert them all at once. Each file gets its own progress bar.

Related Conversions

Other AVI conversions

Convert to MKV

Need batch AVI to MKV conversion?
The web converter handles 1 file at a time. Filoshi desktop converts unlimited files, runs offline, and supports 3,000+ formats.
Get Filoshi Desktop - $14.90