How Old IS Leonard Hofstadter, REALLY? (Big Bang Theory)

22 jan 2025 this is from season 2 i believe, so that makes sheldon the same age as leonard, a year younger than raj and howard, and three years younger than amy. a fourth wrote: Don't know the episode they have it from but the big bang theory wiki lists hofstadter as being born in may 1980, making him 33 years old. He is 5 years older than penny that, according to. 14 feb 2024 given that leonard was born on may 17th, 1980 and received his phd at 24, that would make him 27 at the start of the series. Over time, he develops a greater sense of self.