How old was John Krasinski in Monsters vs Aliens?

There’s something captivating about discovering a celebrity’s age during a defining role. That detail can add a new layer of appreciation to their performance. Let’s take a closer look at that intriguing number.

In Monsters vs Aliens, John Krasinski took on the role at the age of:

29 years old

According to our findings, that was the correct age of the celebrity.

Our method involved using the first calendar day of the release year of Monsters vs Aliens:

January 1, 2009

And the birth date of John Krasinski:

October 20, 1979

Movies tend to be released within a year of filming, so John Krasinski may have been one year off from the listed age in certain scenes.