Real age of John Krasinski in Leatherheads
In the movie Leatherheads, John Krasinski was:
28 years old
That was the real age of the celebrity according to our calculation.
The calculation of the shown age took into account the first day of the year in which the movie Leatherheads was released:
January 1, 2008
And the day in which John Krasinski was born:October 20, 1979
Since movies usually don't take more than one year to be released since the beginning of the filming process, John Krasinski may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.