›› Convert millibar to

millimeter mercury

›› More information from the unit converter

How many millibar in 1 millimeter mercury? The answer is 1.33322387415.
We assume you are converting between millibar and .
You can view more details on each measurement unit:
millibar or millimeter mercury
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.01 millibar, or 0.0075006157584566 millimeter mercury.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between millibars and millimeters mercury.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of millibar to millimeter mercury

1 millibar to millimeter mercury = 0.75006 millimeter mercury

5 millibar to millimeter mercury = 3.75031 millimeter mercury

10 millibar to millimeter mercury = 7.50062 millimeter mercury

20 millibar to millimeter mercury = 15.00123 millimeter mercury

30 millibar to millimeter mercury = 22.50185 millimeter mercury

40 millibar to millimeter mercury = 30.00246 millimeter mercury

50 millibar to millimeter mercury = 37.50308 millimeter mercury

75 millibar to millimeter mercury = 56.25462 millimeter mercury

100 millibar to millimeter mercury = 75.00616 millimeter mercury

›› Want other units?

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

Enter two units to convert


›› Common pressure conversions

millibar to attobar
millibar to technical atmosphere
millibar to centitorr
millibar to kilopond/square centimeter
millibar to decipascal
millibar to centimeter water
millibar to femtobar
millibar to nanopascal
millibar to megapascal
millibar to terapascal

›› Definition: Millibar

A millibar (mb) is 1/1000th of a bar, a unit for measurement of pressure. It is not an SI unit of measure, however it is one of the units used in meteorology when describing atmospheric pressure. The SI unit is the pascal (Pa), with 1 millibar = 100 pascals (a hectopascal)

›› 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.

›› Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!