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Water Pressure vs. Head

Pressure in pounds per square inch (psi) vs. head in feet of water (ft h2o).

Pressure vs. head units chart

Download and print Pressure vs. Head Units chart

Convert from Pressure - Pounds per Square Inch (psi) to Head of Water in Feet (fth2o)pressure to head converter

Convert from Head - Water Feet to Pressure in Pounds per Square Inchpressure to head converter

  • 1 ftH2O = 0.4335 psi = 62.43 lbs/ft2
  • 1 psi (lb/in2) = 144 psf (lbf/ft2) = 6894.8 Pa (N/m2) = 6.895x10-3 N/mm2 = 6.895x10-2 bar = 27.71 in H2O at 62oF (16.7oC) = 703.1 mm H2O at 62oF (16.7oC) = 2.0416 in mercury at 62oF (16.7oC) = 51.8 mm mercury at 62oF (16.7oC) = 703.6 kg/m2 = 0.06895 atm = 2.307 Ft. H2O = 16 ounces

Example - Convert from Head to Pressure

A head of 64 ft can be converted to pressure by using the second table:

64 ftH2O = 27.7 psi (lb/in2)

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