Convert MKV to MP4
MKV video → MP4 video: convert online for free. MKV to MP4 conversion runs right in your browser — your files never leave your device.
Drop files here or choose them
You can also paste files with Ctrl+V
Files never leave your device
About the formats
- MKV video
- Open Matroska container: any video and audio codecs, several audio and subtitle tracks. Common for films and series.
- MP4 video
- Common video container, usually with H.264 video and AAC audio. Plays almost everywhere.
How to convert MKV to MP4
- Choose a MKV video file or drag it onto the page.
- Check the settings and click Convert.
- Download the MP4 video file when it is ready.
Frequently asked questions
Why convert MKV to MP4?
MKV plays in VLC, but iPhones, smart TVs, video editors and social networks often reject it. MP4 opens almost everywhere. Video and sound are kept; subtitles are not carried over.
Is converting MKV to MP4 free?
Yes. Conversion is free, with no sign-up and no watermarks.
Are my MKV files uploaded anywhere?
No. The conversion runs in your browser, so your files never leave your device.
Will the quality change when converting to MP4?
Quality depends on the target format and the settings you choose; lossy formats let you adjust the quality level.