What is the equivalent pressure in psi of 1 foot of water?

To convert the height of a column of water into pressure, it's important to understand the relationship between height, density, gravity, and pressure. One foot of water generates a pressure due to the weight of that column of water acting on a unit area.

The standard formula to convert the height of water into pressure in psi is based on the fact that water has a density of approximately 62.4 pounds per cubic foot and that pressure is defined as force per unit area.

Specifically, 1 foot of water column is equivalent to about 0.433 psi. This is derived from the formula:

[

Pressure (psi) = \frac{(Height in feet) \times (Weight of water in pounds per cubic foot)}{144} ; (to ; convert ; from ; square ; feet ; to ; square ; inches)

]

When you plug in the values, you find that:

[

Pressure = \frac{(1 , \text{foot}) \times (62.4 , \text{lb/ft}^3)}{144 , \text{in}^2/ft^2} \approx 0.433 , \text