This calculator allows you to convert from Attopascal to Kilogram-force/sq. millimeter and in a reverse direction. To convert from Attopascal to Kilogram-force/sq. millimeter, enter the amount of Attopascal into the first input and to convert from Kilogram-force/sq. millimeter to Attopascal, enter the amount of Kilogram-force/sq. millimeter into the second input.