1. What is a Feet of Head to PSI Calculator?

Definition: This calculator converts water head in feet to pressure in pounds per square inch (psi).

Purpose: It helps engineers, plumbers, and technicians working with fluid systems to quickly convert between these common pressure measurements.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Pressure (psi)
• \( h \) — Head (feet of water column)
• 2.31 — Conversion factor (feet of water per psi)

Explanation: The head in feet is divided by 2.31 to convert to psi. This factor comes from the specific weight of water (1 psi = 2.31 feet of water head).

3. Importance of Head to PSI Conversion

Details: Accurate conversion between these units is essential for designing and troubleshooting pumping systems, pipelines, and pressure vessels.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 2.31?
A: This comes from the specific weight of water (62.4 lb/ft³) and unit conversions (1 psi = 144 lb/ft²).

Q2: Does this work for liquids other than water?
A: No, this is specific to water. For other liquids, you need to account for their specific gravity.

Q3: How accurate is this conversion?
A: It's accurate for water at standard conditions (60°F). Temperature variations cause minor changes.

Q4: Can I use this for negative head (vacuum)?
A: Yes, the same conversion applies to vacuum measurements in feet of water.

Q5: What's the reverse calculation (psi to feet)?
A: Multiply psi by 2.31 to get feet of head (h = P × 2.31).