PSI to mm Hg Calculator: Convert Pounds per Square Inch to Millimeters of Mercury
Convert pounds per square inch (PSI) to millimeters of mercury (mm Hg) with ease using our PSI to mm Hg calculator. This tool helps you quickly determine the equivalent pressure in mm Hg based on the PSI value entered.
Understanding PSI to mm Hg Conversion
Pounds per square inch (PSI) and millimeters of mercury (mm Hg) are both units used to measure pressure, but they belong to different measurement systems. PSI is used in the imperial system, while mm Hg is used in the metric system. PSI is widely used in the industrial, mechanical, and engineering fields, whereas mm Hg is commonly used in meteorology, medicine (especially for blood pressure), and barometric pressure measurements.
Conversion Factor
The conversion factor between PSI and mm Hg is that 1 PSI is equal to approximately 51.7149 mm Hg.
| Unit | Symbol | Equivalent |
|---|---|---|
| Pounds per Square Inch | PSI | 1 PSI = 51.7149 mm Hg |
| Millimeters of Mercury | mm Hg | 1 mm Hg = 0.0193368 PSI |
Formula for PSI to mm Hg Conversion
The formula to convert PSI to millimeters of mercury (mm Hg) is:
mm Hg = PSI × 51.7149
Where:
- PSI: Pounds per square inch
- mm Hg: Millimeters of mercury (the result)
Common Applications of PSI to mm Hg Conversion
| Application | Typical PSI Range | Typical mm Hg Range |
|---|---|---|
| Atmospheric Pressure | 14.7 PSI | 760 mm Hg |
| Vacuum Systems | 0-30 PSI | 0-1551 mm Hg |
| Automotive Systems | 15-50 PSI | 776-2585 mm Hg |
Frequently Asked Questions
What is the relationship between PSI and mm Hg?
Pounds per square inch (PSI) is an imperial unit used in mechanical, industrial, and automotive applications, while millimeters of mercury (mm Hg) is a metric unit used primarily for atmospheric pressure and barometric measurements. The relationship between the two is that 1 PSI is equivalent to approximately 51.7149 mm Hg.
How do I convert PSI to mm Hg?
To convert PSI to millimeters of mercury (mm Hg), simply multiply the PSI value by 51.7149.
Why is mm Hg used instead of PSI in some regions?
Millimeters of mercury (mm Hg) is used primarily in countries that follow the metric system, and it is commonly used in meteorology, barometric pressure measurements, and medicine (especially blood pressure). PSI is used in industries that follow the imperial system, such as the United States, particularly in mechanical and industrial applications.
Can I use this calculator for blood pressure measurements?
Yes! This calculator is useful for converting blood pressure measurements, which are often expressed in mm Hg, into PSI for use in applications that require imperial units.