How many millimeter mercury in 1 gigabar?
The answer is 750061575845.66.
We assume you are converting between and gigabar.
You can view more details on each measurement unit:
millimeter mercury or gigabar
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.0075006157584566 millimeter mercury, or 1.0E-14 gigabar.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between millimeters mercury and gigabars.
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You can do the reverse unit conversion from gigabar to millimeter mercury, or enter any two units below:
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millimeter mercury to inch of air
millimeter mercury to terapascal
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millimeter mercury to foot water
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 "giga" represents a factor of 109, or in exponential notation, 1E9.
So 1 gigabar = 109 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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