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How many millimeter mercury in 1 atmosphere [technical]?
The answer is 735.55913527668.
We assume you are converting between and atmosphere [technical].
You can view more details on each measurement unit:
millimeter mercury or atmosphere [technical]
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.0075006157584566 millimeter mercury, or 1.0197162129779E-5 atmosphere [technical].
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between millimeters mercury and atmospheres.
Type in your own numbers in the form to convert the units!
1 millimeter mercury to atmosphere [technical] = 0.00136 atmosphere [technical]
10 millimeter mercury to atmosphere [technical] = 0.0136 atmosphere [technical]
50 millimeter mercury to atmosphere [technical] = 0.06798 atmosphere [technical]
100 millimeter mercury to atmosphere [technical] = 0.13595 atmosphere [technical]
200 millimeter mercury to atmosphere [technical] = 0.2719 atmosphere [technical]
500 millimeter mercury to atmosphere [technical] = 0.67976 atmosphere [technical]
1000 millimeter mercury to atmosphere [technical] = 1.35951 atmosphere [technical]
You can do the reverse unit conversion from atmosphere [technical] to millimeter mercury, or enter any two units below:
millimeter mercury to micropascal
millimeter mercury to sthene/square meter
millimeter mercury to micrometer of mercury
millimeter mercury to centihg
millimeter mercury to gigapascal
millimeter mercury to torr
millimeter mercury to megabar
millimeter mercury to exapascal
millimeter mercury to ton/square foot
millimeter mercury to kilopond/square centimeter
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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