1. What is Water Head Pressure to PSI Calculator?

Definition: This calculator converts the height of a water column (head) into pressure measured in pounds per square inch (psi).

Purpose: It helps engineers, plumbers, and technicians determine the static water pressure at the base of a column of water.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{psi} \) — Water pressure (pounds per square inch)
• \( h_{ft} \) — Height of water column (feet)
• 0.433 — Conversion factor (psi per foot of water head)

Explanation: Each vertical foot of water creates approximately 0.433 psi of pressure at its base.

3. Importance of Water Head Pressure Calculation

Details: Understanding water head pressure is crucial for designing water systems, determining pump requirements, and ensuring proper system operation.

4. Using the Calculator

Tips: Simply enter the height of the water column in feet. The calculator will automatically compute the pressure in psi.

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 0.433?
A: This comes from the weight of water (62.4 lb/ft³) divided by 144 (in²/ft²), resulting in 0.433 psi per foot of head.

Q2: Does this work for other liquids?
A: No, this is specific to water. For other liquids, multiply by their specific gravity relative to water.

Q3: Is this static or dynamic pressure?
A: This calculates static pressure only. Dynamic pressure would include flow velocity effects.

Q4: How accurate is this calculation?
A: It's accurate for pure water at standard conditions (4°C). Temperature and impurities may cause slight variations.

Q5: What's the pressure at 100 feet of head?
A: Approximately 43.3 psi (100 × 0.433).