How many millimeter mercury in 1 millihg?
The answer is 1.0000000193891.

We assume you are converting between and **millihg**.

You can view more details on each measurement unit:

millimeter mercury or
millihg

The SI derived unit for **pressure** is the pascal.

1 pascal is equal to 0.0075006157584566 millimeter mercury, or 0.0075006156130264 millihg.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between millimeters mercury and millihg.

Type in your own numbers in the form to convert the units!

1 millimeter mercury to millihg = 1 millihg

5 millimeter mercury to millihg = 5 millihg

10 millimeter mercury to millihg = 10 millihg

20 millimeter mercury to millihg = 20 millihg

30 millimeter mercury to millihg = 30 millihg

40 millimeter mercury to millihg = 40 millihg

50 millimeter mercury to millihg = 50 millihg

75 millimeter mercury to millihg = 75 millihg

100 millimeter mercury to millihg = 100 millihg

You can do the reverse unit conversion from millihg to millimeter mercury, or enter any two units below:

millimeter mercury to bar

millimeter mercury to hectopascal

millimeter mercury to decitorr

millimeter mercury to inch mercury

millimeter mercury to zettapascal

millimeter mercury to femtobar

millimeter mercury to exabar

millimeter mercury to foot of mercury

millimeter mercury to millimeter water

millimeter mercury to centibar

The millimeter of mercury by definition is 133.322387415 Pa (13.5951 g/cm3 × 9.80665 m/s2 × 1 mm), which is approximated with known accuracies of density of mercury and standard gravity.

The torr is defined as 1/760 of one standard atmosphere, while the atmosphere is defined as 101325 pascals. Therefore, 1 Torr is equal to

101325/760 Pa. The decimal form of this fraction is approximately 133.322368421.

The relationship between the torr and the millimeter of mercury is:

1 Torr = 0.999999857533699 mmHg

1 mmHg = 1.000000142466321 Torr

The difference between one millimeter of mercury and one torr, as well as between one atmosphere (101.325 kPa) and 760 mmHg (101.3250144354 kPa), is less than one part in seven million (or less than 0.000015%). This small difference is negligible for most applications outside metrology.

The SI prefix "milli" represents a factor of
10^{-3}, or in exponential notation, 1E-3.

So 1 millihg = 10^{-3} hg.

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