MKV to MP4 Converter
Convert MKV (Matroska) videos to MP4 for free — playable on phones, editors, and the web. Runs in your browser; your video never leaves your device.
How it works
Choose your MKV file
Pick the .mkv video. It's processed locally in your browser.
Convert to MP4
We re-encode it to MP4 here — no upload. Short clips finish fastest.
Download
Save an MP4 that plays on phones, editors, and websites.
Frequently asked questions
Is the MKV to MP4 converter free?
Yes — free, with no signup and no watermark.
Why convert MKV to MP4?
MKV isn't supported by many phones, editors, and websites; MP4 is near-universal, so converting makes your video play everywhere.
Does my video get uploaded?
No. Conversion runs entirely in your browser, so the file never leaves your device.
How long does conversion take?
It runs on your device, so short clips are fast; long or high-resolution videos need more time and memory. Shorter files convert best.
Will I lose quality converting MKV to MP4?
Both are container formats; we re-encode to standard MP4. Any change is minimal and generally not noticeable for typical videos.