How many millimeter mercury in 1 millimeter of water?
The answer is 0.073555913527668.

We assume you are converting between and **millimeter of water [4 °C]**.

You can view more details on each measurement unit:

millimeter mercury or
millimeter of water

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

1 pascal is equal to 0.0075006157584566 millimeter mercury, or 0.10197162129779 millimeter of water.

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

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

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

1 millimeter mercury to millimeter of water = 13.5951 millimeter of water

2 millimeter mercury to millimeter of water = 27.1902 millimeter of water

3 millimeter mercury to millimeter of water = 40.7853 millimeter of water

4 millimeter mercury to millimeter of water = 54.3804 millimeter of water

5 millimeter mercury to millimeter of water = 67.9755 millimeter of water

6 millimeter mercury to millimeter of water = 81.5706 millimeter of water

7 millimeter mercury to millimeter of water = 95.1657 millimeter of water

8 millimeter mercury to millimeter of water = 108.7608 millimeter of water

9 millimeter mercury to millimeter of water = 122.3559 millimeter of water

10 millimeter mercury to millimeter of water = 135.951 millimeter of water

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

millimeter mercury to gigabar

millimeter mercury to inch mercury

millimeter mercury to kilogram-force/square millimeter

millimeter mercury to yoctobar

millimeter mercury to megapascal

millimeter mercury to pascal

millimeter mercury to nanopascal

millimeter mercury to kilogram-force/square meter

millimeter mercury to atmosphere

millimeter mercury to decibar

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.

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