1. What is PSI to inHg Conversion?

The conversion between pounds per square inch (PSI) and inches of mercury (inHg) is important in various scientific and engineering fields, particularly in meteorology and pressure measurement applications.

2. How Does the Calculator Work?

The calculator uses the conversion formula:

Where:

• \( PSI \) — Pressure in pounds per square inch
• \( 2.03602 \) — Conversion factor from PSI to inHg

Explanation: This conversion factor is derived from the relationship between these two pressure units, based on standard atmospheric pressure definitions.

3. Practical Applications

Details: This conversion is commonly used in meteorology (barometric pressure), aviation (altimeter settings), and industrial processes where different pressure units are used.

4. Using the Calculator

Tips: Simply enter the PSI value you want to convert. The calculator will automatically compute the equivalent inHg value. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why convert between PSI and inHg?
A: Different industries and countries use different pressure units, so conversion is often necessary for standardization and comparison.

Q2: How accurate is this conversion?
A: The conversion factor is accurate to six significant figures, sufficient for most practical applications.

Q3: What is standard atmospheric pressure in these units?
A: Standard atmospheric pressure is approximately 14.6959 PSI or 29.9213 inHg.

Q4: Can this be used for vacuum measurements?
A: Yes, the same conversion factor applies to vacuum measurements (negative gauge pressure).

Q5: Are there other common pressure units?
A: Yes, other common units include pascals (Pa), bars, torr, and atmospheres (atm).