Free tool
MKV to MP4 Converter
Change an MKV video to MP4. Large files are fine, because nothing is uploaded.
- No upload
- No account
- No watermark
- No credit card
How it works
Convert MKV to MP4 in 3 steps
- 01
Choose an MKV file
Drop the video into the panel.
- 02
Keep H.264
Or keep the original video for a faster copy.
- 03
Download the MP4
Click Convert. The file goes to your Downloads when it is ready.
Then keep editing
The full editor is right behind the tool
Click Edit in Raymarch, and your file goes on a real timeline. Cut it, add titles, captions and music, and export to MP4, MOV, MKV or WebM. The editor is free.
See the timeline editor
Frequently asked questions
Is a large MKV file a problem?
No. Nothing is uploaded, so even a large file starts right away.
Is this tool free?
Yes. There is no account, no credit card, no watermark and no limit on the number of files.
Do you upload my file?
No. Your file stays on your computer, so even a large file starts right away.
Which browsers work?
Chrome and Edge on a computer work best.
More free tools
Convert MKV to MP4 now
No upload · No account · No watermark · No credit card