Convert MKV to MP4, free
Convert MKV to MP4 entirely in your browser; your file never uploads. Free, no signup, no watermark. Need a transcript afterward? Your first 30 minutes are free.
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Free · no signup · runs in your browser · nothing uploads
Convert MKV to MP4 in your browser
Drop your MKV, let it convert in the browser, and download the MP4. No account, no upload, no watermark.
Nothing uploads
The whole conversion runs in the open tab. There’s no server on the other end, so your file is never received or stored anywhere but your own device.
Why MP4
MKV is great for storage but doesn’t play everywhere. MP4 opens on virtually any phone, browser, and editor, which makes it the safe choice for sharing or uploading. Say you captured a session in OBS as an .mkv; converting it to MP4 first means the client you send it to can open it without hunting for a player.
Need a transcript?
If the words are what you’re after, you don’t even need to convert first: hand Hushscript the MKV as-is, it extracts the audio, and transcribes it with free speaker labels. The first 30 minutes are free once you add a payment method.
Frequently asked questions
Does my file upload?
No. The conversion runs in your browser, and your video stays on your device.
Is it free?
Yes. No cost, no registration, and no limit on conversions.
Will I lose quality?
No. MKV and MP4 can carry the same video stream, so where possible this is a quick container change rather than a re-encode.
Can I transcribe it?
Yes. Once it's an MP4, transcribe it in the app and get free speaker labels.
Need the words? Transcribe it with 30 free minutes
Start – 30 free minutes