How do you convert water psi to air psi?

Pounds per Square Inch

First you need the size of the pipe and the volume of water supply. Pressure will vary during usage. Standard well system operates between 20-40 psi and city systems operate from 50-70 psi.

Pascals x 0.0001450377 = PSI

One formula used to convert psi to bar is: 1 psi = (32.174 lbm /1 lbf s2)x(0.45359237 kg /1 lbm)x(144 in2/1 ft2)x(1 ft /0.3048 m) x(1 m s2 /105 kg) = 0.06894747 bar So 1 bar = 14.503795 psi The Math...

Seawater = .445 psi per foot. 5000 * .445 = 2225 psi Freshwater = .433 psi per foot. 5000 * .433 = 2165 psi