Pressure

A as various functions of pounds per square inch, such as:


Atmospheric pressure (psi) = 14.7 psi
Metric atmosphere = psi ¥ 0.07
Kilograms per square centimeter (kg/cm = psi ¥ 0.07 2 )
Kilopascals = psi ¥ 6.89
Bars = psi ¥ 14.50


Source: Handbook of water and wastewater treatment plant operations

Wikipedia:  https://en.wikipedia.org/wiki/Pressure