1. What is Inches of Water to PSI Conversion?

Definition: This calculator converts a measurement of water height in inches to pounds per square inch (psi) of pressure.

Purpose: It helps engineers, HVAC technicians, and scientists convert between these common pressure units.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{psi} \) — Pressure in pounds per square inch (psi)
• \( h_{in} \) — Height of water column in inches

Explanation: The conversion factor 27.68 comes from the relationship between water height and pressure at standard conditions.

3. Importance of Pressure Conversion

Details: Accurate conversion between these units is essential for pressure measurements in various systems, particularly in low-pressure applications.

4. Using the Calculator

Tips: Simply enter the water height in inches. The calculator will automatically compute the equivalent pressure in psi.

5. Frequently Asked Questions (FAQ)

Q1: Why 27.68 inches of water = 1 psi?
A: This is based on the specific weight of water at standard conditions (62.4 lb/ft³) and unit conversions.

Q2: Does temperature affect the conversion?
A: Yes, but for most practical applications near room temperature, the standard factor is sufficiently accurate.

Q3: When would I need this conversion?
A: Common in HVAC systems, gas pressure measurements, and low-pressure fluid systems.

Q4: How precise is this conversion?
A: The calculator provides 6 decimal places, though practical measurements often only need 2-3 decimal places.

Q5: Can I convert psi back to inches of water?
A: Yes, by multiplying psi by 27.68 to get inches of water.