MKV to MP4
Convert an MKV video to MP4 — choose the quality, preview the result and download. Runs entirely in your browser; the video is never uploaded.
Input
Higher bitrate = sharper picture, bigger file. The video is re-encoded in real time, so conversion takes as long as the clip.
MP4 video
Upload a MKV video, pick a quality and press Convert to MP4. Everything runs in your browser — the file is never uploaded.
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Guides
What MKV to MP4 does
Turn a Matroska MKV — a downloaded movie, an OBS recording, a ripped disc — into an MP4 that plays on phones, TVs and editors. The conversion runs in your browser, so the video is never uploaded.
How to use it
- Upload a MKV file.
- Pick a video quality (bitrate).
- Click Convert to MP4, preview the result, then download it.
Good to know
Your browser plays the video and re-records it, so conversion takes about as long as the clip itself — keep the tab open. Your browser has to be able to play the file: Chrome and Edge open most MKV files with H.264 video, while Safari and Firefox may refuse MKV — if so, you'll see an error rather than a broken file. If a browser can't record MP4, it saves WebM instead and says so. Re-encoding is lossy; raise the quality for detailed footage.
Privacy
Playback and encoding happen on your device. Nothing is sent to a server.