How do I convert MP4 to MKV?

Upload your MP4 file using the drop zone above, click "Convert to MKV", and download the result. No account required — free daily conversions are available for all users.

Is the MP4 to MKV converter free?

Yes. Convertica offers 25 free minutes per day for guest users with no account needed. Files up to 1.25 GB are supported. Paid plans offer higher limits.

All uploaded files are automatically deleted from our servers within 24 hours. We do not share or sell your data. No ads are shown on the free tier.

convertica

MP4 → MKV · free · no account needed

MP4 to MKV converter

Convert MP4 (MPEG-4 Video) files to MKV (Matroska Video) format. Free guest conversions — no signup required.

deleted after 24h 25 free min/day 1.25 GB max file size

Drag & drop files here

or click to browse from your computer

No account required · View pricing for higher limits

how it works

How to convert MP4 to MKV

Upload your file

Drag and drop or browse to select. Multiple files supported.

Convert instantly

Click convert — your file is processed securely on our servers.

Download the result

Get your converted file immediately. Deleted from servers in 24h.

about these formats

MP4 vs MKV

MP4

What is a MP4 file?

MP4 is the most widely supported video format. It uses H.264 or H.265 compression and plays on virtually every device, browser, and social platform. MP4 is the recommended format for sharing and streaming.

MKV

What is a MKV file?

MKV (Matroska) is an open-source video container that supports multiple audio, video, and subtitle tracks in a single file. It is popular for high-quality movie rips and anime distribution.

Why convert MP4 to MKV?

Convert MP4 files to MKV for better compatibility with your devices and software
No software installation required — everything runs in your browser
Free daily conversions with no account, no ads, and no watermarks
Files are automatically deleted from our servers within 24 hours

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