›› Convert to decibar

millimeter mercury

›› More information from the unit converter

How many millimeter mercury in 1 decibar? The answer is 75.006157584566.
We assume you are converting between and decibar.
You can view more details on each measurement unit:
millimeter mercury or decibar
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.0075006157584566 millimeter mercury, or 0.0001 decibar.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between millimeters mercury and decibars.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of millimeter mercury to decibar

1 millimeter mercury to decibar = 0.01333 decibar

10 millimeter mercury to decibar = 0.13332 decibar

20 millimeter mercury to decibar = 0.26664 decibar

30 millimeter mercury to decibar = 0.39997 decibar

40 millimeter mercury to decibar = 0.53329 decibar

50 millimeter mercury to decibar = 0.66661 decibar

100 millimeter mercury to decibar = 1.33322 decibar

200 millimeter mercury to decibar = 2.66645 decibar

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

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›› Common pressure conversions

millimeter mercury to kip/square foot
millimeter mercury to kilopond/square millimeter
millimeter mercury to kilonewton/square meter
millimeter mercury to centitorr
millimeter mercury to millibar
millimeter mercury to centihg
millimeter mercury to zettapascal
millimeter mercury to millimeter of water
millimeter mercury to foot of air
millimeter mercury to pound/square foot

›› Definition: Millimeter mercury

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.

›› Definition: Decibar

The SI prefix "deci" represents a factor of 10-1, or in exponential notation, 1E-1.

So 1 decibar = 10-1 bars.

The definition of a bar is as follows:

The bar is a measurement unit of pressure, equal to 1,000,000 dynes per square centimetre (baryes), or 100,000 newtons per square metre (pascals). The word bar is of Greek origin, báros meaning weight. Its official symbol is "bar"; the earlier "b" is now deprecated, but still often seen especially as "mb" rather than the proper "mbar" for millibars.

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