Convert inches of water to pounds per square foot

Explanation

From this page you can convert inches of water to pounds per square foot (or inH₂O to psf) simply, by using the application above.

In case you are wondering, to convert from inches of water to pounds per square foot you need to multiply by 5.2023. This factor is calculated using the respective definitions of the two units you can find below.

Formula

1 inH₂O≈5.2023 psf

inches of waterinH₂O

dimension	pressure
symbol	inH₂O, iwg
synonyms	inches water column, inches of water gauge

The inch of water (inH₂O, iwg) is a unit of pressure.

Note: this is the conventional inch of water, two other water pressure units exist, the inch of water at 39.2 °F and the inch of water at 60 °F.

Definition of the inch of water

An inch of water is the pressure exerted by a 1-inch-high column of water.

Value

One inch of water is approximately equal to 249.0889 Pa.

NIST Guide to the SI, Appendix B.9

Equivalences

One inch of water is equivalent to:

Water based pressure units

inch of water	inH₂O	1
foot of water	ftH₂O	12
inch of water at 39.2 °F	-
foot of water at 39.2 °F	-
inch of water at 60 °F	-

Related Conversions

pounds per square footlbf/ft²

dimension	pressure
symbol	lbf/ft², psf

The pound per square foot (lbf/ft², psf) is a unit of pressure.

Definition of the pound per square foot

One psf is equal to the pressure exerted by a force of one pound-force on a surface of one square foot.

Value

One psf is equal to 8896443230521185806080000 pascals.

Equivalences

Here are some equivalences between the pound per square foot and other pressure units:

Some Facts

A small cat sitting on your lap would create a pressure of roughly 13 pounds per square foot. So, quite manageable.