MKV to MP4 Converter: Free, Fast and No Upload
Drop in a MKV file and get a MP4 back. Convert MKV to MP4 when a phone, TV, editor or website will not open the MKV file you have. Everything runs on your own device, so your video is never uploaded.
MP4 plays almost everywhere. WebM suits websites. MOV suits Apple devices.
How to use the MKV to MP4
- Drop your MKV file onto the converter.
- Check that MP4 is selected as the output format.
- Press Convert to MP4, preview the result and download it.
What is MKV?
MKV (Matroska) is a flexible container that can hold several audio tracks and subtitles, which is why downloads and screen recordings often use it. It plays on desktop players such as VLC. Many phones, TVs and social platforms will not accept MKV.
What is MP4?
MP4 is the most widely supported video format. It plays on phones, computers, TVs, browsers and every social platform. It plays on practically everywhere. It is a lossy format, so a re-encode always trades a little quality for size.
Frequently asked questions
How do I convert MKV to MP4 for free?
Open the converter, drop in your MKV file, press Convert to MP4 and download. It is free with no watermark and no sign up.
Will I lose the extra audio tracks or subtitles?
The converter keeps the main video and the first audio track. Extra tracks and subtitles in an MKV are not carried over to the MP4.
Is my MKV file uploaded anywhere?
No. The conversion runs in your browser on your own device, so the file never leaves it.
Does converting reduce quality?
The video is re-encoded at high quality, so for normal viewing the difference is not noticeable. Converting never improves quality beyond the original.