1. What is an inHg to psi Conversion Calculator?

Definition: This calculator converts pressure measurements from inches of mercury (inHg) to pounds per square inch (psi).

Purpose: It helps engineers, meteorologists, and technicians convert between these common pressure units used in various applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{psi} \) — Pressure in pounds per square inch (psi)
• \( inHg \) — Pressure in inches of mercury

Explanation: The conversion factor 0.491154 comes from the relationship between these two pressure units based on standard gravity and mercury density.

3. Importance of Pressure Unit Conversion

Details: Accurate pressure conversion is essential in fields like meteorology, aviation, HVAC systems, and industrial processes where different units are standard.

4. Using the Calculator

Tips: Simply enter the pressure value in inches of mercury (inHg) and the calculator will provide the equivalent in psi.

5. Frequently Asked Questions (FAQ)

Q1: What is inHg?
A: Inches of mercury (inHg) is a unit of pressure based on the height of a mercury column in a barometer.

Q2: Where is inHg commonly used?
A: inHg is often used in meteorology, aviation, and some industrial applications.

Q3: What is psi?
A: Pounds per square inch (psi) is a pressure unit commonly used in engineering and industrial applications.

Q4: Why 0.491154 as the conversion factor?
A: This factor accounts for standard gravity (9.80665 m/s²) and mercury density (13595.1 kg/m³) at 0°C.

Q5: How precise is this conversion?
A: The conversion is precise for standard conditions. For high-precision applications, temperature corrections might be needed.