1. What is PSI to Feet Conversion?

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

Purpose: It helps engineers and technicians in fluid systems relate pressure measurements to water column height.

2. How Does the Conversion Work?

The conversion uses the formula:

Where:

• \( H \) — Head in feet of water
• \( P \) — Pressure in psi
• 2.31 — Conversion factor (ft/psi)

Explanation: 1 psi equals 2.31 feet of water column height at standard conditions (water at 4°C, 1 atm).

3. Importance of PSI to Feet Conversion

Details: This conversion is essential for:

• Designing water distribution systems
• Interpreting pressure gauge readings
• Calculating pump head requirements
• Converting between pressure and elevation head

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 2.31?
A: It comes from the relationship between pressure and fluid height: 1 psi = 1 lb/in² = 144 lb/ft². Water weighs 62.4 lb/ft³, so 144/62.4 = 2.31 ft.

Q2: Does this change with different fluids?
A: Yes, the conversion factor changes based on fluid density. For other fluids, use: Head (ft) = (psi × 2.31) / (specific gravity).

Q3: Is temperature a factor?
A: Slightly, as water density changes with temperature. The 2.31 factor assumes water at 4°C (39.2°F).

Q4: How accurate is this conversion?
A: For most engineering purposes, it's sufficiently accurate. For precise measurements, consider temperature and exact fluid properties.

Q5: Where is this conversion commonly used?
A: In hydraulics, plumbing, HVAC systems, water treatment, and any application involving fluid pressure measurements.