Convert MKV to MP4

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Converting MKV to MP4 is free: drop your MKV above, hit convert, and download the MP4. Files delete themselves within an hour.

Most MKV to MP4 conversions are wrapper swaps: the pictures stay pictures, they just trade MKV's box for one built for playing everywhere: browsers, phones, TVs, editors, slide decks. If the codec inside your MKV is one MP4 accepts, Flippy keeps quality bit-for-bit identical; if not, it re-encodes once, carefully, at matching quality.

Why flip MKV to MP4

MKV is the format that hoards: video, a dozen audio tracks and every subtitle, all in one box. It was born in 2002, the open-source Matroska project, and its real weak spot is playing on TVs, iPhones and editors that never learned to open the box.

MP4 is the world's default video: the file that plays before anyone has to think about it. A container, most often carrying H.264 or H.265 video with AAC audio. That makes it the right destination when what you need is playing everywhere: browsers, phones, TVs, editors, slide decks.

How to convert MKV to MP4

1
Drop your MKV file into the flipper above, or click to browse for it.
2
Check the output format: MP4 is already selected for you.
3
Hit Convert, give it a moment, then download your new MP4.

MKV vs MP4, side by side

	MKV	MP4
Born	2002, the open-source Matroska project	2001, the MPEG standards group, built on Apple's QuickTime design
Type	video · container	video · container
Best for	high-quality rips and archives with multiple audio and subtitle tracks	playing everywhere: browsers, phones, TVs, editors, slide decks
Weak spot	playing on TVs, iPhones and editors that never learned to open the box	very little day to day: as a container its quality depends on the codec inside
Typical size	as big as whatever you put inside: movie files often run to several gigabytes	roughly 50–100 MB per minute at 1080p, depending on bitrate
Plays on	VLC and desktop players love it; smart TVs, Apple devices and editors often don't.	Every browser, phone, TV and editing app worth mentioning.

Questions people ask

Will converting MKV to MP4 lose quality?

Usually not: when the video codec is compatible, Flippy swaps the container without re-encoding, so quality is untouched. If a re-encode is needed, it happens once at matching quality.

Will the MP4 file be bigger or smaller than my MKV?

Similar, unless a re-encode is involved: then it depends on the codec. MP4 typically runs roughly 50–100 MB per minute at 1080p, depending on bitrate.

Where will the MP4 file play?

Every browser, phone, TV and editing app worth mentioning. That's the usual reason people leave MKV behind: MP4 simply opens in more of the places that matter.

How long does MKV to MP4 conversion take?

When it's a pure container swap it's nearly instant, since nothing is re-encoded. Full re-encodes take roughly as long as the video plays, often less.

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