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Definition

Pressure is a measure of the force against a surface. Push is generally expressed together a pressure per unit area.

You are watching: How many pascals is 1 atm

Here is a comfortable conversion calculator for some common pressure terms. The interpretations of each term space in the adhering to section.

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Pressure conversion Calculator(Enter number on the left side; answer appears on the appropriate side)
This many: pounds per square inchatmospherestorrbarmillibarpascalskilopascalsmegapascalsgigapascalsEquals pounds per square inchatmospherestorrbarmillibarpascalskilopascalsmegapascalsgigapascals

Additional Info

Many of the items girlfriend will find on one MSDS come in both English (U.S. Customary System) and metric (International system or SI or cgs) units. The metric system has been adopted by virtually every country except the unified States. Even in the U.S., scientists and technical world use the metric system because of its lull of use.

If you are unfamiliar v the terms used in this definitions, watch our massive unit and distance unit conversion pages.

UnitEquivalent measurements, comments
Pounds every square inch(psi, PSI, lb/in2, lb/sq in)Commonly used in the U.S., but not elsewhere. Typical atmospheric press is 14.7 psi, which method that a tower of wait one square customs in area increasing from the Earth"s atmosphere to an are weighs 14.7 pounds.
Atmosphere(atm)Normal atmospheric push is identified as 1 atmosphere. 1 atm = 14.6956 psi = 760 torr.
Torr(torr)Based ~ above the original Torricelli barometer design, one atmosphere of pressure will force the shaft of mercury (Hg) in a mercury barometer to a height of 760 millimeters. A press that reasons the Hg obelisk to climb 1 millimeter is called a torr (you might still check out the term 1 mm Hg used; this has been replaced by the torr. "mm Hg" is frequently used for blood pressure measurements). 1 atm = 760 torr = 14.7 psi.
Bar(bar)The bar almost identical to the atmosphere unit. One bar = 750.062 torr = 0.9869 atm = 100,000 Pa.
Millibar(mb or mbar)There room 1,000 millibar in one bar. This unit is supplied by meteorologists who find it less complicated to refer to atmospheric pressures without utilizing decimals. One millibar = 0.001 bar = 0.750 torr = 100 Pa.
Pascal(Pa)1 pascal = a force of 1 Newton every square meter (1 Newton = the pressure required to accelerate 1 kilogram one meter per second per second = 1 kg.m/s2; this is actually fairly logical because that physicists and engineers, honest). 1 pascal = 10 dyne/cm2 = 0.01 mbar. 1 atm = 101,325 Pascals = 760 mm Hg = 760 torr = 14.7 psi.Kilopascal(kPa)The prefix "kilo" way "1,000", so one kilopascal = 1,000 Pa. Therefore, 101.325 kPa = 1 atm = 760 torr and 100 kPa = 1 bar = 750 torr.
Megapascal(MPa)The prefix "mega" way "1,000,000", therefore one megapascal = 1,000 kPa = 1,000,000 Pa = 9.869 atm = 145 psi.
Gigapascal(GPa)The prefix "giga" way "1,000,000,000", for this reason one gigapascal = 1,000 MPa = 1,000,000 kPa = 1,000,000,000 Pa = 9,870 atm = 10,000 bar. Pressure of number of gigapascals can convert graphite to diamond or make hydrogen a metallic conductor! such high pressure are rarely encountered in everyday life.
Some functioned Examples

CORRECT: transform 5 atm come psi:

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WRONG: convert 5 atm come psi:

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CORRECT: convert 4,000 pascal to torr:

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SDS Relevance

Be very careful to keep in mind the units as soon as reading number on a safety and security Data Sheet. If you ever before perform a calculate of any sort, always remember to compose the units alongside each number in your calculation and make sure that they cancel properly. If castle don"t, her calculation to be incorrect!

Further Reading

See also: area units, street units, mass units, energy units, mole, temperature units, vapor pressure, volume units.

Additional definitions from Google and OneLook.

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