Question: how old is harry potter and the deathly hallows part 1?
Answer: So Harry James Potter, was born on the 31st July 1980. So when he starts at Hogwarts on the 1st September 1991 he would have been 11 years old. Only a little kid :) The battle of Hogwarts ended 3rd May 1998, so by the end of Harry Potter and the Deathly Hallows (excluding the epilogue) he would have been 17.