1. What is an In Water to PSI Calculator?

Definition: This calculator converts water pressure from pounds per square inch (PSI) to inches of water column (inH₂O).

Purpose: It helps engineers, plumbers, and HVAC technicians work with different pressure measurement units commonly used in various systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{in} \) — Pressure in inches of water (inH₂O)
• \( P_{psi} \) — Pressure in pounds per square inch (psi)
• 27.68 — Conversion factor (1 psi = 27.68 inH₂O at 60°F)

Explanation: The PSI value is multiplied by the standard conversion factor to get the equivalent pressure in inches of water column.

3. Importance of Pressure Unit Conversion

Details: Different industries use different pressure units. This conversion is particularly important in HVAC systems, plumbing, and gas distribution where water column measurements are common.

4. Using the Calculator

Tips: Simply enter the pressure value in PSI and the calculator will automatically compute the equivalent in inches of water column.

5. Frequently Asked Questions (FAQ)

Q1: Why 27.68 as the conversion factor?
A: This is the standard conversion at 60°F (15.6°C) based on the density of water. The exact value can vary slightly with temperature.

Q2: When would I need this conversion?
A: When working with gas pressures (often measured in inH₂O) or comparing pressure measurements between different systems.

Q3: Is the conversion factor the same for all liquids?
A: No, this specific factor applies only to water. Other liquids would have different conversion factors based on their density.

Q4: How accurate is this conversion?
A: It's accurate for most practical purposes, though extreme temperatures or altitudes might require adjustments.

Q5: Can I convert back from inH₂O to PSI?
A: Yes, simply divide the inH₂O value by 27.68 to get PSI.