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Result
1 Inches of Mercury = 3386.39 Pascal
Pressure unit conversions for engineering, weather, and medical applications. Pascal, Bar, PSI, ATM and more.
| Inches of Mercury (inHg) | Pascal (Pa) |
|---|---|
| 1 inHg | 3386.39 Pa |
| 2 inHg | 6772.78 Pa |
| 5 inHg | 16931.95 Pa |
| 10 inHg | 33863.9 Pa |
| 25 inHg | 84659.75 Pa |
| 50 inHg | 169319.5 Pa |
| 100 inHg | 338639 Pa |
| 250 inHg | 846597.5 Pa |
| 500 inHg | 1693195 Pa |
| 1000 inHg | 3386390 Pa |
Formula
Pascal = Inches of Mercury × 3386.39
Worked Example
Example: 5 Inches of Mercury = 5 × 3386.39 = 16931.95 Pascal
To convert Inches of Mercury to Pascal, multiply the Inches of Mercury value by 3386.39. This factor is derived from the ratio between the two units.
Inches of mercury is a unit of pressure based on the height of a mercury column measured in inches. It is used in the United States for barometric pressure readings in weather reports and in aviation altimeter settings.
History
Inches of mercury is the traditional unit for barometric pressure in US weather forecasts. Standard atmospheric pressure is 29.92 inHg. Aviation uses inHg for altimeter settings in the US, while most other countries use hectopascals.
The pascal is the SI unit of pressure defined as one newton per square meter. It is used in science, engineering, and meteorology. Since one pascal is a very small pressure, kilopascals (kPa) and megapascals (MPa) are more commonly used in practice.
History
The pascal is named after French mathematician and physicist Blaise Pascal, who made important contributions to the study of fluid mechanics and pressure in the 17th century. It was adopted as the SI unit of pressure in 1971.
Calculated using the latest NIST standards for physical constants and unit ratios.
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