Free Online Converter
Convert MP4 to MKV
Free online MPEG-4 Part 14 to Matroska converter. Fast, secure processing directly in your browser.
How to Convert MP4 to MKV
- Click or drag your MP4 file into the upload area above
- Wait for the file to be loaded (happens instantly in your browser)
- Click the "Convert File" button
- Your processed MKV file will automatically download
Why Convert MP4 to MKV?
Key Features
100% FreeNo subscription, no hidden fees, no limits
Privacy FirstFiles never leave your device
Fast ProcessingInstant browser-based conversion
No InstallationWorks directly in your browser
High QualityMaintains quality during conversion
SecureClient-side processing only
About MP4 and MKV Formats
MP4 (MPEG-4 Part 14)
MP4 is the most widely supported video format, offering excellent compression and quality. Compatible with virtually all devices and platforms.
MKV (Matroska)
MKV (Matroska) is a flexible container format that can hold unlimited video, audio, and subtitle tracks. Popular for high-quality video content.