Last year, an interviewer asked Francis how he envisages hell. His response stayed with me: “It’s difficult to imagine it. What I would say is not a dogma of faith, but my personal thought: I like to think hell is empty; I hope it is.”
It's not that simple, because there are multiple concepts and Hebrew and Greek words that were translated as "hell". And many of those passages don't mention hell at all, but are just interpreted as such by readers.