Hagrid may once have informed Harry Potter that he was a wizard, but you wouldn't have found him complimenting him on his height. Because of his 'Harry Potter' fame, many of us still imagine Radcliffe has a child, when in fact he's now very much an adult man. That doesn't necessarily mean he's grown much larger though - he isn't much taller now than he was when the last of the 'Harry Potter' movies was released, and we think he's probably finished growing by now!
If you look at this picture, you'll notice that his glamorous co-star Emma Watson is towering over him. That's not just because she's wearing heels - Radcliffe is a mere 5 feet and 5 inches tall. He was once mocked about his height in an interview with Playboy magazine, to which he responded that he's still tall enough to enter the US marines if he wanted to, and so his height doesn't bother him. Good answer!