Convert pound per square inch to millimeter of mercury
Enter the value to convert from pound per square inch to millimeter of mercury.
How to Convert Pound per square inch to Millimeter of mercury
Converting pound per square inch to millimeter of mercury is straightforward using our conversion calculator.
Conversion Formula
mmHg = psi × 51.7149252039Reverse conversion: Convert millimeter of mercury to pound per square inch
Comparison: Psi vs Mmhg
When to Use Each Unit
Psi: Primary pressure unit in United States for tires, hydraulics, pneumatics, and industrial applications.
Mmhg: Medical standard for blood pressure, respiratory medicine, and some scientific applications.
Common Conversion Values
- 1 psi ≈ 6,895 Pa
- 1 psi ≈ 6.895 kPa
- 1 psi ≈ 0.0689 bar
- 14.7 psi = 1 atm
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
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