Real age of Elvis Presley in Jailhouse Rock
In the movie Jailhouse Rock, Elvis Presley 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 Jailhouse Rock was released:
January 1, 1957
And the day in which Elvis Presley was born:January 08, 1935
Since movies usually don't take more than one year to be released since the beginning of the filming process, Elvis Presley may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.