How many inch of mercury in 1 millimicrometer of mercury [0 °C]? The answer is 3.9370079197446E-8. We assume you are converting between inch of mercury [0 °C] and millimicrometer of mercury [0 °C]. You can view more details on each measurement unit: inch of mercury or millimicrometer of mercury [0 °C] The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.00029529983071445 inch of mercury, or 7500.6156130264 millimicrometer of mercury [0 °C]. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between inches of mercury and millimicrometers of mercury. Type in your own numbers in the form to convert the units!
1 inch of mercury to millimicrometer of mercury [0 °C] = 25399999.70498 millimicrometer of mercury [0 °C]
2 inch of mercury to millimicrometer of mercury [0 °C] = 50799999.40995 millimicrometer of mercury [0 °C]
3 inch of mercury to millimicrometer of mercury [0 °C] = 76199999.11493 millimicrometer of mercury [0 °C]
4 inch of mercury to millimicrometer of mercury [0 °C] = 101599998.8199 millimicrometer of mercury [0 °C]
5 inch of mercury to millimicrometer of mercury [0 °C] = 126999998.52488 millimicrometer of mercury [0 °C]
6 inch of mercury to millimicrometer of mercury [0 °C] = 152399998.22985 millimicrometer of mercury [0 °C]
7 inch of mercury to millimicrometer of mercury [0 °C] = 177799997.93483 millimicrometer of mercury [0 °C]
8 inch of mercury to millimicrometer of mercury [0 °C] = 203199997.63981 millimicrometer of mercury [0 °C]
9 inch of mercury to millimicrometer of mercury [0 °C] = 228599997.34478 millimicrometer of mercury [0 °C]
10 inch of mercury to millimicrometer of mercury [0 °C] = 253999997.04976 millimicrometer of mercury [0 °C]
You can do the reverse unit conversion from millimicrometer of mercury [0 °C] to inch of mercury, or enter any two units below:
Inches of mercury or inHg is a non-SI unit for pressure. It is still widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.
It is defined as the pressure exerted by a column of mercury of 1 inch in height at 32 °F (0 °C) at the standard acceleration of gravity.
1 inHg = 3,386.389 pascals at 0 °C.
Aircraft operating at higher altitudes (above 18,000 feet) set their barometric altimeters to a standard pressure of 29.92 inHg or 1,013.2 hPa (1 hPa = 1 mbar) regardless of the actual sea level pressure, with inches of mercury used in the U.S. and Canada. The resulting altimeter readings are known as flight levels.
Piston engine aircraft with constant-speed propellers also use inHg to measure manifold pressure, which is indicative of engine power produced.
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