In-browser · No upload
Free MKV to MP4 Converter
Convert MKV (Matroska) videos to MP4 for phones, editors, and social uploads. Processing stays on your device so the file never hits a third-party server.
Quick answer
MKV to MP4 Converter is a free browser tool on Knowlify. Use it below with no signup. Media files are processed on your device and are not uploaded to our servers. For narrated training videos from documents, use https://create.knowlify.com.
How it works
Three steps, no account
01
Add your MKV file
Drop or browse for a MKV file. Processing never leaves your browser.
02
Convert to MP4
Click convert. We re-encode locally so the output plays where MP4 is expected.
03
Download the result
Save the MP4 file to your device. Large files take longer because everything stays local.
FAQ
Questions people ask about MKV to MP4 Converter
Is this MKV to MP4 Converter free?+
Yes. MKV to MP4 Converter on Knowlify is free to use with no signup, no watermark, and no account required.
Do my files get uploaded to a server?+
No. Conversion and compression run in your browser with FFmpeg.wasm. Files stay on your device unless you choose to download the result.
How do I convert MKV to MP4 online?+
Open this page, drop your MKV file, click convert, and download the MP4 result. No install and no cloud upload.
Will quality drop during conversion?+
We use practical defaults for compatibility. Slight quality loss is normal when re-encoding. Start from the highest-quality source you have.
Do I need an account?+
No. Open the tool, use it in your browser, and download or copy the result.
Does this work on Mac and Windows?+
Yes. It runs in modern desktop browsers (Chrome, Edge, Firefox, Safari). Very large media files need enough device memory.
Need a full video, not just a utility?
Done converting? Turn SOPs, decks, and docs into narrated training videos with Knowlify at create.knowlify.com.