To begin with, let's outline the ages of Harry Potter throughout the series:
- Harry Potter and the Sorcerer's Stone: 11 years old
- Harry Potter and the Chamber of Secrets: 12 years old
- Harry Potter and the Prisoner of Azkaban: 13 years old
- Harry Potter and the Goblet of Fire: 14 years old
- Harry Potter and the Order of the Phoenix: 15 years old
- Harry Potter and the Half-Blood Prince: 16 years old
- Harry Potter and the Deathly Hallows – Part 1: 17 years old
- Harry Potter and the Deathly Hallows – Part 2: 17 years old
