MKV to MP4 Converter
Drop in an MKV and get back an MP4 that plays everywhere. Most files just get repackaged, in seconds and without quality loss, right in your browser.
Drop your MKV here
Recordings, downloads, captures. Out comes a plain MP4.
Converts on your device. Your file never leaves this page.
- Usually seconds, no re-encode
- Zero quality loss on repackage
- No upload, converts on-device
- Free, no sign-up, no watermark
A converter that stays out of your way.
There’s no upload bar and no sign-up wall. You get your file back as an MP4, and that’s the whole transaction.
MKV in, MP4 out
Drop in a MKV file and get back an MP4 that plays on phones, TVs, editors, and upload forms alike. Same name, same footage.
Fast when the file allows it
When the video inside is already MP4-friendly, it gets repackaged in seconds with zero quality loss. Only files with older codecs need a real re-encode.
Your video stays on your machine
Most online converters upload your footage to their server. This one doesn't. The work happens inside this browser tab, and closing the tab clears everything.
Sound handled too
The audio track comes along automatically, converted only if the format demands it. Videos without sound convert just the same.
The container that holds everything, and the one that plays everywhere
MKV is the archivist’s container: it happily holds any codec, a stack of audio tracks, chapters, and full subtitle files, which is why screen recorders, rippers, and download tools love it. The trade-off is hospitality. TVs, phones, tablets, and editing timelines want MP4, and an MKV that plays flawlessly in VLC gets a shrug from the living-room screen.
The good news is that the video inside most MKVs is already MP4-compatible. This page checks yours, and when it qualifies, the conversion is a repackage: same picture, same sound, new container, done in seconds on your own machine.
OBS recordings, downloads, and rips
Three kinds of MKV walk in here. Screen recordings, because OBS defaults to MKV precisely so a crash can’t destroy the file; those are H.264 and repackage instantly. Downloaded and archived video, which is usually the same story. And older rips with exotic codecs inside, which are the minority that trigger a genuine re-encode; the progress bar will make it obvious, and long files take a while.
Recording in OBS for an edit later? The repackage path here does the same job as OBS’s own “remux” feature, handy when the recording is already on a machine without OBS installed.
What gets left behind
Honesty section: MP4 is a pickier container than MKV, so extras don’t survive. Subtitle tracks are dropped, secondary audio tracks are dropped, chapters are dropped. What you get is the main video and the main audio in the world’s most compatible wrapper. If the extras matter, keep the MKV as the archive copy; you’ll have both files, each doing its job.
How to convert MKV to MP4
Three steps, less than a minute. No setup, no sign-up.
Drop in the MKV file
Drag it into the box above, or click Choose a file and pick it from a folder.
Let it work
Most MKV files just get repackaged and finish in seconds. Files that need a real re-encode take longer; the progress bar tells it straight either way.
Save the MP4
Hit Download and the MP4 lands with the same name as the original, ready to play, edit, or upload anywhere.
MKV to MP4 converter FAQ
Usually none at all. Most MKVs hold H.264 or HEVC video with AAC or MP3 audio, all of which MP4 accepts unchanged, so the tool repackages rather than re-encodes. Files carrying older or web-native codecs get a real re-encode, which costs a little quality and a lot more time.
They don't make the trip. MKV treats subtitles as first-class tracks; MP4's subtitle support is messy enough that carrying them over reliably isn't honest to promise. Keep the original MKV if the subs matter, or use a desktop tool to burn them into the picture.
The first one, which is the main mix in almost every file. Choosing among dub and commentary tracks is a desktop-app job; a one-drop web tool takes the sensible default.
Licensing and inertia. MKV is an open container beloved by the recording and archiving crowd, but TV and phone makers standardized on MP4 years ago. Same video inside, different level of hardware hospitality.
No. The conversion happens in this browser tab, on your machine. A 2 GB recording never has to crawl through an upload bar, because there isn't one.
This converts files you already have. Vidferry goes and gets them.
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