Is it possible to convert a Joomla theme to a Concrete5 theme?
PermalinkThanks!

It will take time and looking at that template, I would assume that time to be measured in days.
But yes, it is possible. If you know how to do this stuff, just start learning the internals of concrete5 and you'll be on your way. If not, hire a developer or look for a similar theme from the marketplace.
https://www.concrete5.org/community/forums/jobs1/...
The more details you include in the request, the more exact quotes you should be expecting. E.g. listing all the features that you would need from that theme would play a big part in estimating the size of the project.