Online MP4 to MKV converter | Free GroupDocs Apps

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Convert MP4 to MKV

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We have already processed 8,914 files with total size of 18,799 Mbytes

Convert your MP4 files online—no registration needed. No matter your platform—Windows, Linux, or macOS—you can convert your MP4 documents rapidly. Drag and drop your file onto the upload form, pick the output format you need, and hit the convert button. After the conversion is finished, download your MKV file instantly.

Conversion time varies based on the MP4 file's size and complexity, but most files convert within seconds. Our advanced options include converting secured documents and delivering conversion results straight to your inbox.

Easily convert your MP4 documents from any location and any device, even on mobile. This conversion app is always accessible online and free for basic use.

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MP4

MPEG-4 file format

MP4 (MPEG-4 Video File) is a widely used digital multimedia container format designed to store video, audio, subtitles, and images, offering high compression efficiency and compatibility across devices. It is supported by popular media players like VLC, QuickTime, and Windows Media Player, as well as editing tools such as Adobe Premiere Pro and Final Cut Pro. The format uses a hierarchical structure with boxes (or atoms) to organize data, supporting advanced features like streaming, metadata embedding, and DRM (Digital Rights Management) for secure content distribution.

MKV

Matroska Video file format

MKV (Matroska Video File) is an open, flexible multimedia container format designed to store video, audio, subtitles, and metadata in a single file. It is widely supported by media players like VLC, MPC-HC, and tools such as MKVToolNix for editing and muxing. The format uses EBML (Extensible Binary Meta Language) for its structure, enabling advanced features like chapter support, multiple audio tracks, and seamless streaming capabilities.

How it works

How to convert MP4 to MKV

Step 1

Click inside the file drop area to upload MP4 file or drag & drop MP4 file.

Step 2

Click on Convert button. Your MP4 files will be uploaded and converted to MKV result format.

Step 3

Download link of result files will be available instantly after conversion.

Step 4

You can also send a link to the MKV file to your email address.

FAQ

Questions & Answers

Can I trust this MP4 to MKV converter with my files?

Yes! Your privacy is our priority. The converted MKV file is available for download right away, and all uploaded files are permanently deleted after 24 hours. No one else can access them.
Do you offer a MP4 conversion API for developers?

Absolutely! With the GroupDocs.Conversion API, you can integrate document conversion capabilities into your .NET, Java, Python, or Node.js applications.
Do I need a specific browser to convert MP4?

No, our converter works with all modern browsers, including Chrome, Firefox, Opera, and Safari. Just open the website and start converting.

Other Supported Conversions

You can also convert MP4 into many other file formats. Please see the complete list below.

MP4 TO MP4
MPEG-4 file format
MP4 TO AVI
Avi file format
MP4 TO FLV
Flash Video file format
MP4 TO MOV
QuickTime file format
MP4 TO WEBM
WEBM file format
MP4 TO WMV
WMV file format
MP4 TO MP3
MP3
MP4 TO AAC
Advanced Audio Coding
MP4 TO AIFF
Audio Interchange File Format
MP4 TO FLAC
Free Lossless Audio Codec
MP4 TO M4A
M4A file format
MP4 TO WMA
WMA file format
MP4 TO AC3
AC3 file format
MP4 TO OGG
OGG file format
MP4 TO WAV
WAV file format

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