Convert MP4 to MKV
Put an MP4 video in an MKV file, for players and media servers that prefer MKV. The video and sound are copied as they are, so it’s quick and lossless.
Files never leave your device
Drop your file here Processed on your device
How to use
- Choose or drop a MP4 file.
- It converts to MKV straight away. Bigger files take longer; keep the page open.
- Play it to check, then download.
Frequently asked questions
Is anything re-encoded?
No. MKV can hold everything an MP4 can, so the video and sound are copied without any loss.
Is my file uploaded anywhere?
No. ConvertRight runs entirely in your browser. Your file is processed on your own phone or computer and is never sent to a server.