1 bar = 100 kilopascals (kPa)
1 kilopascal (kPa) = 0.145 psi (pounds per square inch) = 0.0102 kgf/cm² (kilograms-force per square centimeter) = 0.0098 atm (atmospheres)
1 psi (pound per square inch) = 6.895 kilopascals (kPa) = 0.0703 kg/cm (kilograms per centimeter) = 0.0689 bar = 0.068 atm (atmospheres)
1 atm (atmosphere, standard) = 101.325 kilopascals (kPa) = 14.696 psi = 1.0333 bar
1 atm (atmosphere, engineering) = 98.0665 kilopascals (kPa)
1 mmH2O (millimeter of water) = 9.80665 pascals (Pa) 1 mmHg (millimeter of mercury) = 133.322 pascals (Pa)
1 Torr = 133.322 pascals (Pa) 1 dyn/cm (dyne per centimeter) = 0.1 pascals (Pa)