How Old Is Sheldon Cooper? & The Rest Of The Big Bang Theory Cast

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Every Main Character's Age In The Big Bang Theory

The Big Bang Theory follows its main characters through 12 years of developing relationships, careers and friendships.

The Big Bang Theory follows the main characters as they grow older and mature, spanning twelve years in-universe and out.
The characters in the show age in real time, with viewers being introduced to them at a young age and watching them develop their relationships, careers, and families.
The characters, such as Leonard, Raj, and Stuart, experience significant growth and changes throughout the course of the show, making them one of the most well-rounded characters in television, especially for a sitcom.