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How to convert MP4 to MKV?
You can convert MP4 to MKV with MConverter in three easy steps:
Choose MP4 files from your device
At the top of this page, drag and drop your MP4's. You can also click to select MP4 files using your operating system's file picker. Another method is to press the keyboard shortcut Ctrl+V (⌘+V on Mac) to paste an MP4 file you have copied to clipboard. Converting a folder with MP4 files to MKV is also supported: simply paste or drag and drop it.
Click or tap on MKV from the list of target formats
Alternatively, you can use the search field to quickly find the format you need, whether it's MKV or something else.
Download your MKV files, after MConverter has finished processing them
There's an option to automatically download the converted MKV files, so you don't have to press the download icon for each MKV. You may see a share icon as well. Use it to directly share the MKVs with other apps.
About the formats
Video file formats
MPEG (Moving Picture Experts Group)
MP4 (short for MPEG-4 Part 14) files store multimedia - video, audio and subtitles. Websites frequently use them for displaying videos because the MP4 format is universally supported. However, newer video formats, such as WebM, produce smaller file sizes with almost no quality loss. Therefore, you can free up storage by converting your videos to WebM.
Video file formats
MKV files are MatrosKa Video files. Like the Russian Matryoshka doll, which contains multiple smaller dolls nested inside each other, the MKV format can contain multiple video, audio, and subtitle tracks inside a single file. This makes it convenient to have one video with a number of audio and subtitle tracks in different languages, all inside a single playable file.
Common questions about converting MP4 to MKV
Can I convert MP4 to MKV in bulk?
Yes, MConverter supports batch converting of multiple MP4's to MKVs simultaneously. You can even drag and drop folders containing MP4's to convert to MKV. Pasting MP4 files and folders copied in the clipboard also works: use Ctrl+V.
Can I convert an MP4 file to MKV, if its size is 1 GB?
Yes, with MConverter Premium you can convert big MP4's, up to 1 gigabyte each. The free version lets you convert files up to 200 MB. If you need to convert MP4 files over 200 megabytes, try MConverter Premium.
Is converting MP4's to MKV safe with MConverter?
Yes, we encrypt your connection using industry standards. Plus, your MP4 files are only accessible by you. 24 hours after the conversion completes, they are automatically deleted from MConverter’s servers. You can also delete your MP4's and other converted files immediately after finishing the conversion by clicking the bin icon. Join others who have trusted us to convert over 2,820,963 files so far.
How long does it take to convert MP4 to MKV?
For most videos, the wait could be a few minutes or less. However, MConverter also supports converting larger videos, meaning that it could take a while (up to over an hour, for example).
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