Pressure to Head Calculator

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Pressure to Head Calculator:

Enter the values of pressure, P(lbs/in) and specific gravity, SG to determine the value of Pressure Head, h(ft).

Enter Pressure: lbs/in
Enter Specific Gravity:
   
Result – Pressure Head: ft

Pressure to Head Formula:

The pressure head is a measure of the height of a column of fluid that would generate a given pressure at the bottom of the column. It is widely used in fluid dynamics to express the relationship between pressure and height in a fluid system. The pressure head is often used in various engineering fields, such as hydrodynamics, water distribution, and pump systems.

The pressure (P) is the force exerted per unit area of the fluid, and the head (h) refers to the height of the fluid column required to exert this pressure. The equation for pressure head is derived from the basic principles of fluid statics, where pressure is related to the density of the fluid (SG or specific gravity), the gravitational constant, and the height of the fluid column.

The pressure head is expressed in terms of the height (h) of a fluid column that would produce a given pressure in pounds per square inch (lbs/in) or pascals (Pa), depending on the units used. It is often used in calculating pump head or determining the amount of head loss in a fluid system due to friction.

Pressure Head, h(ft) in feet equals by dividing the pressure, P(lbs/in) in pounds per inch by the product of 0.433 and the specific gravity, SG of the fluid.

Pressure Head, h(ft) = P(lbs/in) / 0.433 * SG

h(ft) = pressure head in feet, ft.

P(lbs/in) = pressure in pounds per inch, lbs/in.

SG = specific gravity.

Pressure to Head Calculation:

  1. Given a water system with a pressure of 50 lbs/in and a specific gravity (SG) of 1.0, calculate the pressure head (h).Given: P(lbs/in) = 50lbs/in, SG = 1.0.

    Pressure Head, h(ft) = P(lbs/in) / 0.433 * SG

    h(ft) = 50 / 0.433 * 1.0

    h(ft) = 115.47ft.

    1. Given a pressure head of 120 feet and a fluid with a specific gravity of 0.9, calculate the pressure (P) exerted by the fluid.

    Given: h(ft) = 1207ft, SG = 0.9.

    Pressure Head, h(ft) = P(lbs/in) / 0.433 * SG

    P(lbs/in) = h(ft) * 0.433 * SG

    P(lbs/in) = 120 * 0.433 * 0.9

    P(lbs/in) = 46.76lbs/in.

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