Real age of Robin Williams in Hook
In the movie Hook, Robin Williams was:
39 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 Hook was released:
January 1, 1991
And the day in which Robin Williams was born:July 21, 1951
Since movies usually don't take more than one year to be released since the beginning of the filming process, Robin Williams may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.