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Since pressure is defined as force acting perpendicularly on a surface, P := d(F n)/ds (where n is the versor perpendicular to the element of surface ds), its unit is N/m2, also known as pascal: 1 Pa = 1 N / 1 m2
N/m^2 (N:Newton (unit of Force) that named Pascal is unit of pressure.

1Pa means that 1N load(force) as normally affect on 1 m^2 area.

other unit is bar , mmHg. atmosphere,......

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Vilma Hirthe

Lvl 10
3y ago
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Wiki User

15y ago

The unit used in most of the world for air pressure is the hectoPascal (hPa), numerically the same as (and replacing) millibars. This unit is not used especially frequently outside the world of meteorology, although the base unit, the Pascal, is.

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Wiki User

9y ago

dyne/cm cube MORE INFO: the previous answer is incorrect. It should have been:- dyne/ square cm. It is more COMMONLY measured in Pascal or KiloPascal (KPa) The pressure in a car tyre is usually measured in KPa. (CGS system) In some industries it is measured in Newton per square metre (N/m2) NOTE: the number 2 after the m should be up above the m, meaning 'squared', but my keyboard will not allow me to put the 2 where I wanted to . Hope you understand what I mean.

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CGS has been replaced by SI in which the Pa is the standard unit, though the Bar (standard atmospheric pressure = 100kPa) is permissible for "ordinary" uses. In fact the EU's Pressure Equipment Regulations, in UK law at least, use the Bar to avoid unwieldy numbers.

That lack of superscript is annoying isn't it! A simple way round it is to type ^2 for the square symbol, as in N/m^2.

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AnswerBot

5mo ago

Pascal (Pa) is a commonly used unit of pressure in the International System of Units (SI).

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Wiki User

15y ago

C.G.S unit of pressure is dyne/cm3

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Wiki User

12y ago

pascal(pa)

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