Convert millimeter of mercury to pound per square inch
Enter the value to convert from millimeter of mercury to pound per square inch.
How to Convert Millimeter of mercury to Pound per square inch
Converting millimeter of mercury to pound per square inch is straightforward using our conversion calculator.
Conversion Formula
psi = mmHg ÷ 51.7149252039Reverse conversion: Convert pound per square inch to millimeter of mercury
Comparison: Mmhg vs Psi
When to Use Each Unit
Mmhg: Medical standard for blood pressure, respiratory medicine, and some scientific applications.
Psi: Primary pressure unit in United States for tires, hydraulics, pneumatics, and industrial applications.
Common Conversion Values
- 1 mmHg ≈ 133.32 Pa
- 1 mmHg = 1 Torr
- 760 mmHg = 1 atm
- 1 mmHg ≈ 0.133 kPa
About Of
Definition: Millimeter of mercury (symbol: mmHg) measures pressure by the height of mercury column it can support.
History: Based on Torricelli's mercury barometer invented in 1643. Traditional pressure measurement using mercury's density.
Current Use: Medical standard for blood pressure, respiratory medicine, and some scientific applications.
Examples: Blood pressure: 80-120 mmHg, central venous: 2-8 mmHg, intracranial: 5-15 mmHg, altitude: 760 mmHg at sea level
About Per
Definition: Pound per square inch (symbol: psi) measures pressure as force in pounds applied over one square inch area.
History: Imperial unit developed with pound-force and inch measurements. Standard in United States engineering and industry.
Current Use: Primary pressure unit in United States for tires, hydraulics, pneumatics, and industrial applications.
Examples: Car tires: 30-35 psi, bike tires: 30-100 psi, hydraulic systems: 1000-5000 psi, air compressors: 100-200 psi