MP4 to MKV Converter
Convert MP4 files to MKV in your browser. Choose your file, adjust available settings, then download the converted file.
Maximum 100 MB per file, up to 5 files at a time.
300+ formats supported
Convert between 300+ file formats in your browser.
Fast and easy
Just drop your files on the page, choose an output format and click "Convert".
How to convert MP4 to MKV
- Click the “Choose Files” button to select your files.
- Click on the “Convert” button to start the conversion
- When the status change to “Done” click the “Download” button
About MP4
MPEG-4 Part 14 · Video container
A common video container that usually holds H.264 or H.265 video and AAC audio.
Opens with: Phones, browsers, TVs, editors and social platforms.
Strengths: Very broad compatibility.
Limitations: Features depend on the audio and video codecs inside.
About MKV
Matroska Multimedia Container · Video container
A flexible video container that can hold several audio tracks, subtitles and chapters.
Opens with: VLC, Kodi and many media players.
Strengths: Supports rich video packages.
Limitations: Some TVs, phones and editors do not accept it.
Why convert MP4 to MKV?
A common video container that usually holds H.264 or H.265 video and AAC audio. A flexible video container that can hold several audio tracks, subtitles and chapters.
Keep multiple tracks and subtitles together. Keep the original file until you have checked the result.