Real age of Ian McKellen in Gods and Monsters
In the movie Gods and Monsters, Ian McKellen was:
58 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 Gods and Monsters was released:
January 1, 1998
And the day in which Ian McKellen was born:May 25, 1939
Since movies usually don't take more than one year to be released since the beginning of the filming process, Ian McKellen may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.