PSI to Inches of Mercury Calculator: Convert Pounds per Square Inch to In H2O
Convert pounds per square inch (PSI) to inches of mercury (In Hg) with ease using our PSI to In Hg calculator. This tool allows you to quickly determine the equivalent pressure in inches of mercury based on the PSI value entered.
Understanding PSI to Inches of Mercury Conversion
Inches of mercury (In Hg) and pounds per square inch (PSI) are both units of pressure, but they are used in different contexts. PSI is a standard unit used in the imperial system for pressure measurement, while In Hg is often used to express pressure in vacuum and barometric pressure systems. Converting between these units allows professionals to compare pressure in both systems, especially when working with atmospheric and fluid systems.
Conversion Factor
1 PSI is equal to approximately 2.036 In Hg under standard conditions (sea level, 0°C, and standard gravity). This conversion factor is key for comparing pressure measurements between systems that use these different units.
| Unit | Symbol | Equivalent |
|---|---|---|
| Pounds per Square Inch | PSI | 1 PSI = 2.036 In Hg |
| Inches of Mercury | In Hg | 1 In Hg = 0.4912 PSI |
Formula for PSI to Inches of Mercury Conversion
The formula to convert PSI to inches of mercury (In Hg) is:
In Hg = PSI × 2.036
Where:
- PSI: Pounds per square inch
- In Hg: Inches of mercury (the result)
Common Applications of PSI to In Hg Conversion
| Application | Typical PSI Range | Typical In Hg Range |
|---|---|---|
| Vacuum Systems | 0-30 PSI | 0-61.08 In Hg |
| Barometric Pressure | 14.7 PSI | 29.92 In Hg |
| Automotive Systems | 0-30 PSI | 0-61.08 In Hg |
Frequently Asked Questions
What is the relationship between PSI and In Hg?
Inches of mercury (In Hg) is a unit of pressure commonly used for vacuum and barometric pressure measurements, while PSI is used in many industrial applications. The relationship is that 1 PSI is equivalent to 2.036 In Hg.
How do I convert PSI to In Hg?
To convert PSI to inches of mercury (In Hg), simply multiply the PSI value by 2.036.
Why is In Hg used instead of PSI in some regions?
In Hg is commonly used in atmospheric pressure measurements, vacuum systems, and barometric pressure. PSI is typically used in more general mechanical and structural applications, particularly for higher pressures in industrial systems.
Can I use this calculator for vacuum pressure systems?
Yes! This calculator is especially useful for converting pressure in vacuum systems from PSI to In Hg, making it relevant for automotive, HVAC, and environmental monitoring systems.