MKV (Matroska) is a great container — but your phone, smart TV, Premiere, and most upload forms don't like it. Converting MKV to MP4 makes the video play everywhere without re-shooting or re-downloading.

Quick answer

Open the video tool, drop the MKV, pick MP4, convert, download. In-browser, no upload.

Step-by-step

Open getconvertify.me/video.
Drop your .mkv file.
Choose MP4.
Convert, then Download.

Why convert MKV to MP4?

Device support — phones, TVs, consoles, browsers all play MP4.
Editor compatibility — most NLEs import MP4 cleanly.
Uploads — sites that reject MKV accept MP4.
Streaming — MP4 is the safe default for sharing.

Private by design

Conversion uses FFmpeg in WebAssembly, running locally in your browser. A movie or recording in MKV can be large and personal — it never leaves your device. No account, no watermark, no tracking.

Big files

Because there's no server, there's no upload queue or size cap. A multi-GB MKV is limited only by your device's memory, and conversion runs at local speed.

Common questions

Subtitles/multiple audio tracks? The primary video + audio are converted; MKV's extra embedded tracks may not all carry over — re-add subtitles separately if needed.

Quality loss? Re-encoded to H.264/AAC with balanced defaults — visually clean.

Phone? Yes; saves through the share sheet.

Convert MKV to MP4 now →