Pressure Unit Calculation and Conversion
Bar
(bar)
Kilopascal
(kPa)
Hectopascal
(hPa)
Millibar
(mbar)
Pascal
(Pa = N/m2)
Standard Atmosphere
(atm)
Millimeters of Mercury (Torr)
(mm Hg=Torr)
Pounds per Square Foot
(lbf/ft2)
Pound-force per Square Inch
(lbf/in2 = PSI)
Inches of Mercury
(in Hg)
Kilogram-force per Square Centimeter
(kgf/cm2)
Kilogram-force per Square Meter
(kgf/m2)
Millimeters of Water Column
(mmH2O)