auto calculate acreage field

Idea created by 1_sacha_selim on Mar 31, 2010
    Duplicate
    Score0
    Make  it possible to change the units of the  Shape_Area field in a feature  class to acres so that it is always  automatically updated with the  correct acreage. Or if you have a field called ACRES, have it auto  calculate based on the Shape_Area field so that it is always correct.