How many inch mercury in 1 millimillitorr? The answer is 3.9370069416124E-8. We assume you are converting between inch mercury [0 °C] and millimillitorr. You can view more details on each measurement unit: inch mercury or millimillitorr The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.00029529980164712 inch mercury, or 7500.6167382113 millimillitorr. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between inches mercury and millimillitorr. Type in your own numbers in the form to convert the units!
1 inch mercury to millimillitorr = 25400006.01549 millimillitorr
2 inch mercury to millimillitorr = 50800012.03099 millimillitorr
3 inch mercury to millimillitorr = 76200018.04648 millimillitorr
4 inch mercury to millimillitorr = 101600024.06198 millimillitorr
5 inch mercury to millimillitorr = 127000030.07747 millimillitorr
6 inch mercury to millimillitorr = 152400036.09297 millimillitorr
7 inch mercury to millimillitorr = 177800042.10846 millimillitorr
8 inch mercury to millimillitorr = 203200048.12396 millimillitorr
9 inch mercury to millimillitorr = 228600054.13945 millimillitorr
10 inch mercury to millimillitorr = 254000060.15495 millimillitorr
You can do the reverse unit conversion from millimillitorr 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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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 millimillitorr = 10-3 millitorr.
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