This calculator allows you to convert from Millimeter mercury (0°C) to Pound-force/square inch and in a reverse direction. To convert from Millimeter mercury (0°C) to Pound-force/square inch, enter the amount of Millimeter mercury (0°C) into the first input and to convert from Pound-force/square inch to Millimeter mercury (0°C), enter the amount of Pound-force/square inch into the second input.