How many inch mercury in 1 millimillihg? The answer is 3.937007532212E-5. We assume you are converting between inch mercury [0 °C] and millimillihg. You can view more details on each measurement unit: inch mercury or millimillihg The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.00029529980164712 inch mercury, or 7.5006156130264 millimillihg. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between inches mercury and millimillihg. Type in your own numbers in the form to convert the units!
1 inch mercury to millimillihg = 25400.00221 millimillihg
2 inch mercury to millimillihg = 50800.00441 millimillihg
3 inch mercury to millimillihg = 76200.00662 millimillihg
4 inch mercury to millimillihg = 101600.00882 millimillihg
5 inch mercury to millimillihg = 127000.01103 millimillihg
6 inch mercury to millimillihg = 152400.01323 millimillihg
7 inch mercury to millimillihg = 177800.01544 millimillihg
8 inch mercury to millimillihg = 203200.01764 millimillihg
9 inch mercury to millimillihg = 228600.01985 millimillihg
10 inch mercury to millimillihg = 254000.02205 millimillihg
You can do the reverse unit conversion from millimillihg to inch 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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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.
The SI prefix "milli" represents a factor of 10-3, or in exponential notation, 1E-3.
So 1 millimillihg = 10-3 millihg.
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