Theses words has many meanings, so it depends what you want to say. (1) ALL RIGHT and OK (adjectives) It can mean you are feeling WELL or GOOD --I fell from the bike, but I'm ALRIGHT. --I fell from the bike, but I'm OK. (2) RIGHT means correct, not wrong (adjective) --Yes, that's the RIGHT answer. I hope this helps =)

"It's all right" and "it's OK" are pretty much the same: it's not a problem, or it's fine. However, "it's right" means it's correct.

"It's all right" means everything is correct "It's alright" sounds the same but means that everything is fine. "It's right" means that 'it' is correct (like when you get a correct answer on a test. The answer is 'right') "It's ok" means that 'it' is fine.