
Meteorologists and weather reporters worldwide often use this unit for convenience, since working in pascals would result in much larger values.ġ5 psi = 15 × 0.0689475729 bar = 1. Millibars (symbol: mb) are also commonly used when referencing atmospheric air pressure, where atmospheric pressure equals 1013.25 mbar (101.325 kPa). The International Bureau of Weights and Measures has specified the bar as a unit that authors should have the freedom to use but has chosen not to include the bar in the list of non-SI units accepted for use with SI. Q: How do you convert 40 Pounds per square inch (psi) to Atmosphere (atm) 40 Pounds per square inch is equal to 2.72184 Atmosphere. The term "bar" comes from the Greek word "baros," which means weight.Ĭurrent use: Although the bar is a metric unit of pressure, it is not accepted within the International System of Units (SI) and is even deprecated within certain fields. History/origin: The unit, bar, was introduced by Vilhelm Bjerknes, a Norwegian meteorologist who founded modern weather forecasting. Technical atmospheres: 1 kilogram of force per centimeter squared. It is equal to 0.987 atmospheres (101,325 Pa), the unit often used as a reference of standard pressure. PSI in other measurement systems Pa 6894.76 × PSI. Barĭefinition: A bar (symbol: bar) is a metric unit of pressure that is defined as exactly 100,000 pascals (symbol: Pa). We assume you are converting between pound/square inch gauge and atmosphere standard. How many standard atmospheres are there in 26 psi You can get the answer by dividing 26 psi by 14.6959. More information from the unit converter How many lb/in2 in 1 atm The answer is 14.695948803581. 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. 26 Psi to Atm calculator accurately and quickly converts 26 psi into atm and standard atmosphere into psi as well. As such, the prototype pound at the time was known as the avoirdupois wool pound.Ĭurrent use: The psi is fairly widely used to measure numerous pressures, such as tire pressure, scuba tank pressure, natural gas pipeline pressure, among others. 1 psi 0.0689475729 bar 1 bar 14.503773773 psi Example: convert 15 psi to bar: 15 psi 15 × 0.0689475729 bar 1. The system is believed to have come into use in England around 1300 and was used in the international wool trade. It is based on the avoirdupois system, a system that uses weights in terms of the avoirdupois pound, which was standardized in 1959. History/origin: Pound-force per square inch is a unit that originated in the imperial and US customary systems of units.

One psi is approximately 6,895 pascals (N/m 2).

It is defined as the pressure that results when a force of one pound-force is applied to a one-square-inch area. Definition: A pound-force per square inch (symbol: psi) is an imperial and US customary unit of pressure based on avoirdupois units.
