Convert inch of mercury to pascal
Inch of mercury
The inch of mercury (inHg) at 32 °F (0 °C) is a unit of pressure equal to the pressure exerted by a column of mercury one inch tall at the freezing point of water under standard gravity, equivalent to approximately 3,386.39 pascals. It is commonly used in aviation, meteorology, and HVAC applications in the United States. Altimeter settings and barometric pressure in American weather reports are typically expressed in inHg.
Pascal
The pascal (Pa) is the SI derived unit of pressure, defined as one newton per square metre (N/m²). It was adopted by the General Conference on Weights and Measures in 1971 and named after the French mathematician and physicist Blaise Pascal. Standard atmospheric pressure is approximately 101,325 Pa, and it is widely used in science, engineering, and meteorology.