Usually 14-16. All depends on the person though. Don't try to rush it, you don't wanna regret your first time. Even if you don't end up with that person, make sure it's something you'll look back on as a good memory.
i was 12.... just please make sure your ready and dont let the boy or girl it is with pressure you into do it. no matter who you are, you have the ability to say no and if that person decides to leave you your better off with out them(: