Real age of Jake Abel in 18
In the movie 18, Jake Abel was:
21 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 18 was released:
January 1, 2009
And the day in which Jake Abel was born:November 18, 1987
Since movies usually don't take more than one year to be released since the beginning of the filming process, Jake Abel may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.