Real age of Keira Knightley in King Arthur
In the movie King Arthur, Keira Knightley was:
18 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 King Arthur was released:
January 1, 2004
And the day in which Keira Knightley was born:March 26, 1985
Since movies usually don't take more than one year to be released since the beginning of the filming process, Keira Knightley may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.