This calculator allows you to convert from Nanopascal to Ton-force (short)/sq. inch and in a reverse direction. To convert from Nanopascal to Ton-force (short)/sq. inch, enter the amount of Nanopascal into the first input and to convert from Ton-force (short)/sq. inch to Nanopascal, enter the amount of Ton-force (short)/sq. inch into the second input.