Real age of James Franco in This Is the End
In the movie This Is the End, James Franco was:
34 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 This Is the End was released:
January 1, 2013
And the day in which James Franco was born:April 19, 1978
Since movies usually don't take more than one year to be released since the beginning of the filming process, James Franco may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.