To convert mp4 to mkv online :

  1. Upload your mp4 file.
  2. Select mkv format from conversion list.
  3. Enter a valid email address to get notified when the file is converted.

You can edit mkv video, like re-size mkv, changing video and audio bitrate, cutting mkv, changing mkv frame rate to high definition video NTCS or PAL and rotate or flip videos. To know more about mp4 to mkv converter online, please visit our Online Video Converter page.


  • Drag & Drop file here


  • Convert to:

  • Email address:

  • You are almost done!

MP4 to MKV

Online Video Converter

How to convert MP4 to MKV ?

Our Free online video converter allow you to convert your video MP4 extension file to MKV format easy and fast just Upload your MP4 file and then select MKV from conversion list, after the conversion is completed you can download the converted video file instantly or by email.


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FileZigZag is a free online file conversion, Supports a wide variety of different file formats, videos, audio, images, documents, archives without download any software.
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