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Pascal [1 Pa=N/m2]
Hectopascal[hPa]
Kilopascal [kPa]
Megapascal [MPa]
Bar[bar]
Technical atmosphere [at]
Standard atmosphere[atm]
Torr[Tr]
Millimeters of mercury[mmHg]
Inches of mercury[inHg]
Psi (pound-force per square inch)[lbf/in2]
Newton per square millimetr[1 N/mm2]
Kilogram per square meter[1 KG/m2]
Examples of Pressure
Diastolic Blood Pressure Systolic Blood Pressure Standard Pressure Sea Level Pressure Mt Everest Pressure Mariana Trench To see description put the mouse cursor over left side of this window .

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Diastolic Blood Pressure

Optimal arterial, diastolic ( phase when the heart fills with blood ) blood pressure called 'gold standard' is 80 mmHg (millimeters of mercury) or 3.15 inHg (inches of mercury)
Note, diastolic pressure between 70-90 mmHg should be considered as 'normal'.
Systolic Blood Pressure

Optimal arterial, systolic ( contraction of heart chambers, driving blood out of the chambers ) blood pressure called 'gold standard' is 120 mmHg (millimeters of mercury) or 4.72 inHg (inches of mercury)
Note, systolic pressure between 110-140 mmHg should be considered as 'normal'.
Standard Pressure

In 1999, the International Union of Pure and Applied Chemistry (IUPAC) recommended that for the purposes of specifying the physical properties of substances, "the standard pressure" should be defined as precisely 100 kPa
Mean Sea Level Pressure

Mean sea level pressure (MSLP or QFF) is the pressure at sea level. Average sea-level pressure is 1 standard atmosphere [atm], 101.325 kilopascals [kPa], 760 millimeters of mercury [mmHg] or 29.921 inches of mercury [inHg]
Atmospheric pressure on Mount Everest

Average atmospheric pressure on Mt Everest (highest mountain on the Earth - 8,848 meters above sea level) is about 3.5 times less then at sea level and it equals 280hPa.
Mariana Trench Pressure

The Mariana Trench (Mariana's Trench) is the deepest part of the oceans, and the deepest location on the Earth. Its depth is about 11km (6.8mi). (Latest reserches indicated a depth 10,916 meters (35,813 ft)).
Water pressure is over 1000 times the standard atmospheric pressure at sea level and it is about 108.6 MPa (megapascal).

Fundamental unit of pressure in the International System Of Units (SI) is: Pascal [Pa], 1 Pa = 1 N / m2 (1 Newton per 1 square meter)

Unit of MeasureIn Pascal [Pa]
Pascal [N/m2]1
Hectopascal [hPa]100
Bar100000
1 N/mm21000000
1 KG/m29.80665
Technical atmosphere [at]98066.5
Standard atmosphere [atm]101325
Torr [Tr]133.322
mmHg133.322
psi [lbf/in2]6894.76
 
 

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