inHg to PSI Converter
Convert inHg to PSI
Quick Conversions
Convert PSI to inHg
Quick Conversions
Common inHg to PSI Conversions
This comprehensive inHg to psi conversion table shows how various units relate to inches of mercury, a unit often used in meteorology and aviation. Use this reference for quick conversions between inHg and pounds per square inch.
| inHg | PSI | inHg | PSI |
|---|---|---|---|
| 1 | 0.491098 | 50 | 24.5549 |
| 10 | 4.91098 | 100 | 49.1098 |
| 29.9213 | 14.696 | 500 | 245.549 |
| 50 | 24.5549 | 1000 | 491.098 |
This inHg to psi conversion reference table provides accurate conversion factors for both SI and imperial units. All values are based on internationally recognized standards for maximum precision in scientific and engineering applications. One inHg is defined as the pressure exerted by a column of mercury 1 inch high at 0°C.
What is inHg?
Inches of mercury (inHg) is a unit of pressure that represents the pressure exerted by a column of mercury 1 inch high at 0°C. This unit is commonly used in meteorology, aviation, and some industrial applications, particularly in the United States, for measuring atmospheric pressure and vacuum. Our inHg conversion tool helps you easily convert between inHg and other pressure units. For example, 1 inHg equals approximately 0.491 psi or 3386.39 pascals.
Frequently Asked Questions
How many inHg are in a psi?
There are approximately 2.036 inHg in one psi.
Why is inHg used in meteorology?
inHg is used in meteorology because it provides a direct and intuitive measure of atmospheric pressure, which is crucial for weather forecasting. Barometers often display pressure in inches of mercury, making it a familiar unit for meteorologists and pilots. This unit is particularly relevant for understanding changes in atmospheric conditions and their impact on weather patterns.
How accurate is the inHg to psi conversion?
The conversion is highly accurate as it is based on established physical constants. One psi is defined as 6,894.76 pascals, and 1 inHg is defined as 3386.39 pascals. Therefore, 1 psi = 6,894.76 / 3386.39 ≈ 2.036 inHg. This precision is sufficient for all practical applications.
What are common uses for inHg to psi conversion?
This conversion is useful in fields where both atmospheric pressure measurements and general atmospheric pressures are considered. For example, in aviation, pilots need to convert local altimeter settings (in inHg) to standard atmospheric pressure (in psi) for accurate altitude calculations. It also finds application in some industrial settings where vacuum levels are compared against standard atmospheric conditions.