Holy Hogwarts!

In October’s Details, Daniel Radcliffe confesses that he lost his virginity at age 16 (Britain’s age of consent) — and that the woman was older.

The age difference “wasn’t ridiculous,” the actor, now, 19, says. “But it would freak some people out.”

(Though Radcliffe doesn’t name-drop, a source says in the new issue of Us Weekly the ex is Amy Byrne, an assistant hairdresser who was 23 when they met on the set of 2005’s Harry Potter and the Goblet of Fire. His rep had no comment.)

Despite the hanky-panky, Radcliffe — who also says he’d like to play a “drag queen” one day — insists his life isn’t too racy.

“I don’t pretend to do anything particularly wild,” he says. “People talk about rebellion and they say, ‘Where is the teenage angst?’

“But I say I try to do it simply by the choices I make in the work I do,” he goes on. “I just like wrong-footing people. I write poetry and I love it. I like being different from most other people in my generation.”