MKV (Matroska Video) is a flexible container format popular for high-quality videos and downloads. MP4 is more widely supported.

Will subtitles be included?

The video and audio tracks are converted. Embedded subtitle tracks in MKV are not burned in during basic conversion.

How does MKV to MP4 conversion work?

The video is re-encoded using H.264/AAC codecs to create a compatible MP4 file that plays everywhere.

MKV to MP4 Offline Converter

Convert MKV videos to MP4 format completely offline in your browser

No Upload 100% Private Free

Loading Video Processing Engine

This tool uses FFmpeg.wasm for video processing. The first time you use it, it will download the processing engine (~25MB). This only happens once and enables powerful offline video conversion.

Initializing video processor...

Drop your MKV videos here

or click to select MKV files

Conversion Settings

Video Quality

Output Resolution

Fast mode (prioritize speed over compression)

Perfect for Matroska MKV Files

MKV Videos

Convert high-quality MKV Matroska files to universally compatible MP4.

Easy Sharing

Share your videos on any platform, device, or social media without issues.

Size Optimization

Reduce file sizes while maintaining quality for easier storage and sharing.

MP4 Works Everywhere

Android Devices

Windows PCs

Web Browsers

Smart TVs

Social Media

Game Consoles

Email Attachments

Cloud Storage