User Guide
- Choose your MKV file or drag it into the tool.
- Wait for the in-browser video engine to load (once per session).
- Convert the MKV container to MP4 without a quality loss.
- Download the MP4, ready for any device or platform.
About the MKV to MP4 Converter
Repackage MKV videos as MP4 so they play on devices and apps that don’t support the MKV container. The conversion keeps your video and audio quality intact.
Processing happens entirely in your browser for full privacy — your files are never uploaded. Perfect for making downloaded or recorded videos universally playable.
Frequently Asked Questions
How do I convert MKV to MP4?
Upload your MKV file, wait for the in-browser engine to load, and convert it to MP4 — then download the result.
Will converting MKV to MP4 reduce quality?
No noticeable loss — the tool repackages your video and audio into MP4 while keeping the quality intact.
Is the MKV to MP4 converter free?
Yes, it is free with no watermark and no sign-up.
Is my file private?
Yes. Everything is processed in your browser, so your video is never uploaded to a server.
Why won’t my MKV play on my phone or TV?
Many devices do not support the MKV container. Converting to MP4 makes the same video play almost everywhere.