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

### Convert from Head - Water Feet to Pressure in Pounds per Square Inch

• 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)

## Related Topics

• ### Basics

Basic engineering data. SI-system, unit converters, physical constants, drawing scales and more.

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• ### Pressure to Head Unit Converter

Pressure vs. head units - like lb/in2, atm, inches mercury, bars, Pa and more.
• ### Pumps - Head vs. Pressure

Converting head (ft or m) to pressure (psi or bar, kg/cm2) and vice versa.
• ### Static Pressure vs. Head

Static pressure vs. pressure head in fluids.
• ### Water Pressure vs. Head

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

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

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## Citation

• The Engineering ToolBox (2008). Water Pressure vs. Head . [online] Available at: https://www.engineeringtoolbox.com/pressure-head-water-d_1354.html [Accessed Day Month Year].

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7.25.9

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