MKV to AVI Converter

Convert MKV to AVI online for free. MKV to AVI in seconds — no software install, no watermark, secure and fast.

Drag & drop your MKV file here, or

How to convert MKV to AVI in 3 steps

  1. 1

    Upload your MKV file

    Drag and drop or select the MKV file you want to convert.

  2. 2

    Choose AVI as output

    The output format is pre-selected for you — just confirm and start the conversion.

  3. 3

    Download your file

    Once processing finishes, download your converted AVI file instantly.

Benefits of converting MKV to AVI

Get simple

Switching from MKV to AVI means your file now offers simple, widely-supported legacy playback on older hardware.

Wider compatibility

MKV is great for support for multiple audio/subtitle tracks and near-lossless quality, but not every app or device handles it well. Converting to AVI sidesteps that, so the file opens wherever you need it to.

No quality compromise

ConvertFastHub runs FFmpeg at production settings, preserving as much of the original MKV fidelity as the AVI format allows.

Keep your original too

Converting doesn't touch your source file — you get a brand-new AVI file back and can keep both versions.

Frequently asked questions

How do I convert MKV to AVI online?
Upload your MKV file above, select AVI as the output format, and click Convert. ConvertFastHub processes the file in the cloud and gives you a download link — no software installation required.
Is it free to convert MKV to AVI?
Yes. Free accounts get 10 conversions every 24 hours with files up to 50MB. For unlimited conversions, larger files up to 1.5GB, and priority processing, upgrade to ConvertFastHub Pro.
What's the advantage of AVI over MKV?
AVI offers simple, widely-supported legacy playback on older hardware. Meanwhile, MKV is known for support for multiple audio/subtitle tracks and near-lossless quality, ideal for archiving — the right choice depends on where you plan to use the file.
Will converting MKV to AVI reduce quality?
ConvertFastHub uses production-grade engines (FFmpeg, LibreOffice, ImageMagick) configured for maximum fidelity. Some format conversions are inherently lossy by design; where possible, we preserve the original quality.
Is my file safe when I convert it?
Files are uploaded over an encrypted connection directly to storage, processed in an isolated sandboxed worker, and permanently deleted within 24 hours.

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