File converter / Video / Convert to MP4 / MKV converter / MP4 to MKV

Choose file to convert to .mkv

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You can convert MP4 file to MKV as well as to variety of other formats with free online converter.

How to convert mkv to mp4?

Step 1

Upload mp4-file

Select mp4 file, which you want to convert, from your computer, Google Drive, Dropbox or drag and drop it on the page.

Step 2

Convert mp4 to mkv

Select mkv or any other format, which you want to convert.

Step 3

Download your mkv-file

Wait till your conversion process will be completed and click download converted mkv file.

Online and free mp4 to mkv converter

Fast and easy

Just drop your mp4 files on the page to convert mkv or you can convert it to more than 250 different file formats without registration, giving an email or watermark.

Don't worry about security

We delete uploaded mp4 files instantly and converted mkv files after 24 hours. All files transfer with secured an advanced level of SSL encryption.

All in the cloud

You don't need to install any software. All mp4 to mkv conversions make in the cloud and don't use any resources of your computer.

MPEG-4 Video File

File extension	.mp4
File category	video
Description	MP4 is one of the popular digital multimedia formats. The original name is MPEG-4 Part 14. It is one of the most versatile digital multimedia formats because it can play both video and audio files. Besides, you can use MP4 file formats for many other purposes, such as streaming over the Internet and storing still images. The characteristics of MP4 files include but are not limited to: MP4 file formats are mostly preferred by users because of the versatile use that includes playing audio and video files. You can use MP4 to stream or watch live events over the Internet. MP4 file stores multiple data types, such as audio, video, scene descriptors, and object descriptors.
Technical details	How to create and how to open an MP4 file You can create an MP4 file by recording video with your device or by using certain software. You can also use various converters to convert videos to MP4 file formats. How to Open an MP4 File Almost all the video players open an MP4 file because MP4 is a standardized digital file format. You can open an MP4 file in several ways, such as using either the Windows Media PlayerorVLC Media Player. Some of the others that can open the MP4 file are QuickTime (for macOS), MPlayer, VLC Media Player, and X Codec Pack. Which other formats MP4 can be converted into and why MP4 is widely used as a video file format because of the efficient video compression scheme that prevents data loss when converting. Besides, you can use a lot of tools to seamlessly convert your MP4 file to another file format. Some of the popular video formats are: 1. m4w 2. mkw 3. mov 4. avi 5. flv MP4 is supported by almost any device that is able to play video. However sometimes a user might need to convert it to another format. MKV is well known for being able to store a huge amount of information like dozens of audio streams and subtitles. WMV format provides better compression than MP4 does.
Programs	Microsoft Windows Media Player VLC media player MPlayer Eltima Elmedia Player Winamp Apple QuickTime Player Apple iTunes
Developer	Moving Picture Experts Group
MIME type	audio/mp4 video/mp4

Matroska Video File

File extension	.mkv
File category	video
Description	MKV Matroska is an open-source multimedia container format that supports more than one audio and subtitle tracks in the same file. It is the most convenient file type where you can add a large sum of data, such as videos, audios, texts, and various images. It is a RAW format which you can later flip and separate based on needed data tracks.
Technical details	Whether it is video, audio, subtitle, or image, every file will be stored in a separate data line. It is a lot similar to the MP4 or AVI format, although when users are packaging an MKV file, they rarely bundle all the tracks within the file. Various media players don't even support the MKV video format; therefore, the users need to use specialized media players who can help the MKV format, such as VLC media player.
Programs	VLC Media Player
Main program	VLC Media Player
Developer	Steve Lhomme
MIME type	video/x-matroska

FAQ

❓ How can I convert mp4 to mkv?

Firstly, select a mp4 file you want to convert or drag and drop it. Secondly, select mkv or any other format you want to convert your file to. Then click convert and wait until your file is converted

⏳ How long should I wait to convert mp4 to mkv?

Video conversion usually takes a few seconds. You will convert mp4 to mkv very quickly.

🛡️ Is it secure to convert mp4 to mkv on OnlineConvertFree?

Sure! We delete your uploaded and converted files, so nobody has access to your information. All types of conversion on OnlineConvertFree (including mp4 to mkv) is 100% safe.

📱 Can I convert mp4 to mkv without software installation?

Absolutely! OnlineConvertFree doesn’t require installation. You can convert any files (including mp4 to mkv) online on your computer or mobile.

mp4 converter

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Convert MP4 to MKV

How to convert mp4 to mkv?