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MKV to MP4 converter

Turn MKV files into MP4 that plays on iPhones and smart TVs. Most videos keep their original picture quality.

Drop MKV files hereor pick them from your computer or paste a link
MKV, also TS, M4V, FLV and AVIFree: 50 files a day, up to 1 GB each
  • No account needed
  • No watermark
  • Servers in the EU
  • Deleted after 24 hours

MKV and MP4 at a glance

MKV

Matroska Video

MKV is an open video format that can store several audio and subtitle tracks in one file. It is common for movie and TV rips but has weak support on Apple devices.

iPhone
No built-in playback, you need an app such as VLC.
No
Windows 11
Plays in the built-in Media Player app.
Yes
Smart TV
Many TVs play MKV from a USB stick, support differs by model.
Partly
All MKV conversions

MP4

MPEG-4 Part 14

MP4 is the most widely supported video format today. Phones record in it by default and almost every player and website accepts it.

iPhone
Plays in the Photos and Files apps.
Yes
Windows
Plays in the built-in Media Player app.
Yes
Browsers
Chrome, Safari, Firefox and Edge play MP4 with H.264 video.
Yes
All MP4 conversions

Questions

About converting MKV to MP4.

Does converting MKV to MP4 reduce the quality?

With the default settings most videos keep their original quality. If you change any video setting or set a start or end time, the video is converted with those settings and the picture can change slightly.

Are subtitles kept when I convert MKV to MP4?

Text subtitles such as SRT or ASS are kept as tracks you can switch on in the player, with their language. Colors and fonts of styled subtitles are not kept. Picture-based subtitles from DVDs and Blu-rays are left out of the MP4 file, and so are teletext and closed caption tracks.

My MKV file has several audio tracks. Which one do I get?

All of them. The MP4 file keeps every audio track with its language, and the track marked as default stays the default. Tracks that contain no sound are left out.

Is the MKV to MP4 converter free?

Yes. You can convert up to 50 files a day for free without creating an account.

What happens to my files after the conversion?

Your files are processed on servers in the EU and deleted automatically after 24 hours.