Calibre won’t do it out of the box, but you can install third party software to do the de-DRMing, and Calibre will use it if present. At least that is how it worked years ago. I think the Calibre web site (if not the app itself) had pointers. Sorry I can’t be more specific – I don’t have access to my laptop at the moment.

I found Calibre clumsy to use. I ended up with a program called Epubor, which so far has worked flawlessly. I'm a strong supporter of software freedom, and think it's ironic that one of the few non-free programs I have actually enhances my freedom to read.