Convert Pounds per Square Inch to Inches of Mercury
Instantly convert Pounds per Square Inch (psi) to Inches of Mercury (inHg) with our free online calculator.
Formula: psi to inHg — multiply by 2.03602
Reference Table
| Pounds per Square Inch (psi) | Inches of Mercury (inHg) |
|---|---|
| 1 | 2.03602 |
| 5 | 10.1801 |
| 10 | 20.3602 |
| 25 | 50.9005 |
| 50 | 101.801 |
| 100 | 203.602 |
How to Convert Pounds per Square Inch to Inches of Mercury
Formula
To convert Pounds per Square Inch (psi) to Inches of Mercury (inHg): multiply by 2.03602
Step-by-Step
- Start with your value in Pounds per Square Inch (psi).
- Multiply by 2.03602 to perform the conversion.
- The result is your value expressed in Inches of Mercury (inHg).
Conversion Factor
1 psi = 2.03602 inHg
Reverse Factor
1 inHg = 0.491154 psi
Worked Example
Convert 25 Pounds per Square Inch to Inches of Mercury: 25 psi = 50.9005 inHg
About Pound per Square Inch (psi)
An imperial unit of pressure equal to one pound-force applied over one square inch (about 6,895 Pa). PSI is the dominant US pressure unit: tire inflation (32–35 psi for most cars), compressed air systems, hydraulic equipment, firearms ammunition chamber pressures, and municipal water supply. US engineering textbooks and specifications for valves, pumps, and pipes are still written in psi. Converting psi to kPa (×6.895) or psi to bar (÷14.504) are the most common US-to-metric pressure conversions.
About Inch of Mercury (inHg)
A pressure unit defined as the pressure exerted by a 1-inch column of mercury at standard conditions (approximately 3,386 Pa). Inches of mercury are the primary unit for US aviation altimeter settings ("Altimeter 30.12 inHg" in METAR reports), US barometric weather reporting, HVAC duct static pressure, and some automotive vacuum gauges (manifold vacuum). Standard sea-level atmospheric pressure is 29.92 inHg.
Quick Facts
- 1 Pound per Square Inch equals 2.03602 Inches of Mercury
- 1 Inch of Mercury equals 0.491154 Pounds per Square Inch
- Pound per Square Inch is a unit of pressure
- Inch of Mercury is a unit of pressure
- This conversion is commonly used in tire inflation, weather reporting, scuba diving, and engineering
- The Pound per Square Inch belongs to the imperial system
Common Pound per Square Inch to Inch of Mercury Conversions
| Pounds per Square Inch (psi) | Inches of Mercury (inHg) |
|---|---|
| 0.1 | 0.203602 |
| 0.5 | 1.01801 |
| 1 | 2.03602 |
| 2 | 4.07204 |
| 5 | 10.1801 |
| 10 | 20.3602 |
| 14.696 | 29.9213 |
| 15 | 30.5403 |
| 20 | 40.7204 |
| 25 | 50.9005 |
| 50 | 101.801 |
| 100 | 203.602 |
| 150 | 305.403 |
| 200 | 407.204 |
| 500 | 1018.01 |
| 1000 | 2036.02 |
Understanding Pounds per Square Inch
The Pound per Square Inch (symbol: psi) is a unit of pressure. An imperial unit of pressure equal to one pound-force applied over one square inch (about 6,895 Pa). PSI is the dominant US pressure unit: tire inflation (32–35 psi for most cars), compressed air systems, hydraulic equipment, firearms ammunition chamber pressures, and municipal water supply. US engineering textbooks and specifications for valves, pumps, and pipes are still written in psi. Converting psi to kPa (×6.895) or psi to bar (÷14.504) are the most common US-to-metric pressure conversions.
It belongs to the imperial measurement system.
Pounds per Square Inch are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Understanding Inches of Mercury
The Inch of Mercury (symbol: inHg) is a unit of pressure. A pressure unit defined as the pressure exerted by a 1-inch column of mercury at standard conditions (approximately 3,386 Pa). Inches of mercury are the primary unit for US aviation altimeter settings ("Altimeter 30.12 inHg" in METAR reports), US barometric weather reporting, HVAC duct static pressure, and some automotive vacuum gauges (manifold vacuum). Standard sea-level atmospheric pressure is 29.92 inHg.
It belongs to the imperial measurement system.
Inches of Mercury are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Why Convert Pounds per Square Inch to Inches of Mercury?
Engineers, mechanics, and scientists frequently need to convert pressure between Pounds per Square Inch and Inches of Mercury when working with different measurement standards. Tire pressure, blood pressure readings, weather barometric measurements, and industrial process specifications may all use different pressure units depending on the region or discipline. Reliable conversion prevents equipment misuse and ensures safety.
Frequently Asked Questions
How do I convert Pounds per Square Inch to Inches of Mercury?
An imperial unit of pressure equal to one pound-force applied over one square inch (about 6,895 Pa). To convert Pounds per Square Inch to Inches of Mercury, multiply by 2.03602. For example, 25 psi equals 50.9005 inHg.
How many Inches of Mercury are in 1 Pound per Square Inch?
There are 2.03602 Inches of Mercury in 1 Pound per Square Inch.
How many Pounds per Square Inch are in 1 Inch of Mercury?
There are 0.491154 Pounds per Square Inch in 1 Inch of Mercury.
What is the formula for Pound per Square Inch to Inch of Mercury conversion?
The formula is: multiply by 2.03602. This means 1 psi = 2.03602 inHg.
Is a Pound per Square Inch bigger than a Inch of Mercury?
No. One Pound per Square Inch is smaller than one Inch of Mercury because 1 psi equals 2.03602 inHg, which is greater than 1.
When do you need to convert between Pounds per Square Inch and Inches of Mercury?
A pressure unit defined as the pressure exerted by a 1-inch column of mercury at standard conditions (approximately 3,386 Pa). Pound per Square Inch and Inch of Mercury are both pressure units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.