Convert inch of mercury to pascal
Enter the value to convert from inch of mercury to pascal.
How to Convert Inch of mercury to Pascal
Converting inch of mercury to pascal is straightforward using our conversion calculator.
Conversion Formula
Pa = inHg × 33.8638864034Reverse conversion: Convert pascal to inch of mercury
Comparison: Inhg vs Pascal
When to Use Each Unit
Inhg: Weather reporting in United States, aviation altimeter settings, and some industrial pressure measurements.
Pascal: Universal scientific and engineering pressure unit. Used in meteorology, materials science, and precise pressure measurements.
Common Conversion Values
- 1 inHg ≈ 3,386 Pa
- 1 inHg ≈ 25.4 mmHg
- 29.92 inHg = 1 atm
- 1 inHg ≈ 0.491 psi
About Of
Definition: Inch of mercury (symbol: inHg) measures pressure by the height of mercury column in inches.
History: Imperial equivalent of mmHg, used in countries with imperial measurement systems for barometric readings.
Current Use: Weather reporting in United States, aviation altimeter settings, and some industrial pressure measurements.
Examples: Weather reports: 28-31 inHg, aviation: altimeter settings, barometric trends: ±0.1 inHg/hour, hurricane: <28 inHg
About Pascal
Definition: The pascal (symbol: Pa) is the SI unit of pressure, defined as one newton per square meter of force applied perpendicularly.
History: Named after French mathematician Blaise Pascal in 1971. Adopted as standard SI pressure unit replacing various national standards.
Current Use: Universal scientific and engineering pressure unit. Used in meteorology, materials science, and precise pressure measurements.
Examples: Sound pressure: 20 μPa, blood pressure: 10-20 kPa, vacuum systems: 1-1000 Pa, material stress: MPa range