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

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

You can view more details on each measurement unit:

millimeter mercury or
millimeter water

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

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

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

1 millimeter mercury to millimeter water = 13.5951 millimeter water

2 millimeter mercury to millimeter water = 27.1902 millimeter water

3 millimeter mercury to millimeter water = 40.7853 millimeter water

4 millimeter mercury to millimeter water = 54.3804 millimeter water

5 millimeter mercury to millimeter water = 67.9755 millimeter water

6 millimeter mercury to millimeter water = 81.5706 millimeter water

7 millimeter mercury to millimeter water = 95.1657 millimeter water

8 millimeter mercury to millimeter water = 108.7608 millimeter water

9 millimeter mercury to millimeter water = 122.3559 millimeter water

10 millimeter mercury to millimeter water = 135.951 millimeter water

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

millimeter mercury to exabar

millimeter mercury to torr

millimeter mercury to kip/square foot

millimeter mercury to pascal

millimeter mercury to centimeter water

millimeter mercury to ton/square foot

millimeter mercury to technical atmosphere

millimeter mercury to yoctobar

millimeter mercury to centimeter mercury

millimeter mercury to zeptobar

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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