A bar is a unit of pressure that is defined as being exactly 100,000 pascals. It can be used as a reference of standard pressure, and it equals 0.987 atmospheres.
The bar, a unit of pressure, was created by Vilhelm Bjerknes, a Norwegian meteorologist who first introduced modern weather forecasting. He got the term from the Greek word "baros," which means weight.
The metric unit of pressure is the bar, but this term is not accepted by the International System of Units and is even deprecated in certain fields. The International Bureau of Weights and Measures has specified the bar as a unit that authors may use but has chosen not to include it in the list of non-SI units accepted for use with SI.
One millibar is also a common unit for atmospheric air pressure, as the atmospheric pressure at sea level amounts to 1013.25 millibars (or 101.325 kilopascals). Meteorologists and weather reporters often use this unit for convenience because working in pascals would result in much larger values.
Pound-force per square inch
A pound-force per square inch (symbol: psi) is an imperial and US customary unit of pressure. It is defined as the pressure that happens when one pound-force is applied to a one-square-inch area. One psi is approximately 6,895 pascals.
Pounds per square inch are a unit of measure that originated in the imperial and US customary units. It's based on the avoirdupois system, which is based on pounds. Pounds and square inches were standardized in 1959. The system is believed to have originated in England around 1300 and was used in the wool trade. The prototype for this system was what at the time was called the avoirdupois wool pound.
The psi is fairly widely used to measure numerous pressures, such as tire pressure, scuba tank pressure, natural gas pipeline pressure, among others. Although the pascal is more widely used in scientific contexts, psi is more often used in everyday contexts, particularly in countries like the United States as well as others under the US customary or imperial systems of units.
Bar to Psi Conversion Table
Bar Psi [psi]
0.01 bar 0.1450377377 psi
0.1 bar 1.4503773773 psi
1 bar 14.503773773 psi
2 bar 29.007547546 psi
3 bar 43.511321319 psi
5 bar 72.518868865 psi
10 bar 145.03773773 psi
20 bar 290.07547546 psi
50 bar 725.18868865 psi
100 bar 1450.3773773 psi
1000 bar 14503.773773 psi
How to Convert Bar to Psi
1 bar = 14.503773773 psi
1 psi = 0.0689475729 bar
Example: Convert 15 bar to psi:
15 bar = 15 × 14.503773773 psi = 217.556606595 psi
A unit converter is an online free tool that enables you to convert one unit of measurement into another.
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