MKV to MP4 Converter

About this converter

EasyConvert turns MKV files (a flexible container popular for HD movies and TV rips, but not supported by many players and editors) into MP4 (the most widely supported video format - it plays on phones, TVs, browsers, and editing software). Unlike traditional online converters, nothing is uploaded to a server: the conversion runs on your own device using WebAssembly. That means no waiting for uploads, no privacy worries, and it works even on large files.

How it works

1. Drop your file(s) in the box above (or click to browse).
2. Make sure MP4 is selected as the output.
3. Click Convert, then Download your file.

Frequently asked questions

How do I convert MKV to MP4?

Drop your MKV file in the box above, choose MP4 as the output format, and click Convert. When it finishes, click Download. Nothing is installed and nothing is uploaded.

Is it really private?

Yes. The converter runs entirely in your browser using WebAssembly (ffmpeg.wasm). Your file never leaves your computer - we could not see it even if we wanted to.

Is it free?

Yes - up to 5 conversions per day with files up to 1 GB. EasyConvert Pro ($5/month) removes both limits.

Why is MKV to MP4 sometimes instant?

If your MKV already contains MP4-compatible video and audio (like H.264 and AAC), EasyConvert just repackages the streams without re-encoding - which takes seconds even for large files.