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Formula
psi = inHg × 0.4911540775
Example
Example: convert 29.92 inches of mercury to pounds per square inch.
29.92 inHg = 14.69533 psi
Conversion table
| inches of mercury (inHg) | pounds per square inch (psi) |
|---|---|
| 1 inHg | 0.49115408 psi |
| 2 inHg | 0.98230815 psi |
| 5 inHg | 2.45577039 psi |
| 10 inHg | 4.91154077 psi |
| 20 inHg | 9.82308155 psi |
| 50 inHg | 24.55770387 psi |
| 100 inHg | 49.11540775 psi |
Explanation
These are both units.
How to convert inches of mercury to pounds per square inch
- Start with the value in inches of mercury (inHg).
- Multiply it by 0.4911540775.
- The result is the measurement in pounds per square inch (psi).
Example: 29.92 inHg → 14.69533 psi
Frequently Asked Questions
How much is 29.92 inches of mercury in pounds per square inch?
29.92 inches of mercury is about 14.6953 pounds per square inch.
How many pounds per square inch is 1 inch of mercury?
1 inch of mercury is about 0.491154 pounds per square inch.
How many inches of mercury is 1 pound per square inch?
1 pound per square inch is about 2.036021 inches of mercury.
What is the difference between inches of mercury and pounds per square inch?
Both measure pressure, but they are commonly used in different contexts. Inches of mercury are used in meteorology and aviation (barometric pressure). Pounds per square inch are often used in engineering and tire pressure, especially in US contexts.
Where are inches of mercury and pounds per square inch used?
In practice: Inches of mercury are used in meteorology and aviation (barometric pressure). Pounds per square inch are often used in engineering and tire pressure, especially in US contexts.
Why does 1 inch of mercury equal 0.491154 pounds per square inch?
Because pressure units are defined with a fixed relationship (often relative to the pascal). To convert, multiply by that factor.