MKV is the Matroska container, popular for films and recordings because it can hold several audio and subtitle tracks. Phones and editors often can’t open it. MP4 is the most compatible video format. It plays on phones, TVs, browsers and every editing app.
Converting to MP4 makes your video play on every phone, TV, browser and social network. The conversion happens entirely in your browser, so your files are never uploaded and there’s no size limit beyond your device’s memory.
How to convert MKV to MP4
- Choose your MKV file.
- Optionally pick a smaller video size, and set a start and end time if you only need part of it.
- Press Convert and download the MP4.
Questions
Is MKV to MP4 conversion free?
Yes, completely free with no limits, sign-up or watermark.
Are my files uploaded?
No. Conversion runs on your own device, so your files stay private.