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AVI to MKV converter

Convert AVI to MKV for free, with no sign-up and no paywall after upload.

    Converted on our server · deleted after 60 min · Free limits

    Where it runs
    Our server, files deleted in 60 min
    Free allowance
    25 files a day, up to 200 MB each
    Typical time
    Seconds to re-wrap; about the playing time to re-encode
    Sign-up
    Not needed

    What happens to your AVI

    If the video is already H.264 or HEVC, we re-wrap it into MKV without re-encoding. That takes seconds and loses nothing.

    Otherwise the video is re-encoded with settings that look the same as the original at a sensible file size. Large videos take roughly as long as they play.

    This conversion runs on our server. Your file is deleted within 60 minutes, and you can delete it yourself as soon as you have downloaded the result.

    How to convert AVI to MKV

    1. Choose your file Tap Choose files and pick the AVI file, or drop it onto the page. You can add several at once.
    2. Convert to MKV Tap Convert. The file is sent over an encrypted connection and converted on our server.
    3. Download Tap Download to save the MKV file. It is deleted from our server within 60 minutes, or straight away if you tap Delete.

    What is an AVI file?

    An old Microsoft video container. Still common on older cameras and downloads.

    Windows, VLC and most desktop players.

    More about AVI files

    What is an MKV file?

    A flexible open container that can hold many audio tracks and subtitles. Common for films and screen recordings from OBS.

    VLC, MPV and Plex play MKV. iPhone, Safari and many TVs do not.

    More about MKV files

    Questions

    Is converting AVI to MKV free?

    Yes. You can convert up to 25 files a day on our server for free, each up to 200 MB, with no sign-up. The limit is shown before you upload, and we never ask you to pay to download a file you have already converted.

    Is it safe to convert my AVI files here?

    Yes. Files travel over an encrypted connection, are processed on our own server, and are deleted within 60 minutes. Nobody looks at them, and you can delete them yourself straight after downloading.

    How long does AVI to MKV take?

    Seconds to re-wrap; about the playing time to re-encode. Bigger files take longer, and you can watch the progress on each file.

    Can I convert AVI to MKV on my iPhone or Android phone?

    Yes. The converter works in Safari, Chrome and any modern browser. Tap Choose files, pick from Photos or Files, and download the result to your phone.

    How do I open an MKV file?

    VLC, MPV and Plex play MKV. iPhone, Safari and many TVs do not.

    Convert AVI to other formats

    Convert other files to MKV