This calculator allows you to convert from Pound (troy or apothecary) to Pound-force square second/foot and in a reverse direction. To convert from Pound (troy or apothecary) to Pound-force square second/foot, enter the amount of Pound (troy or apothecary) into the first input and to convert from Pound-force square second/foot to Pound (troy or apothecary), enter the amount of Pound-force square second/foot into the second input.