![]() ![]() Although the Pascal is used more in the scientific context, PSI is used more day-to-day. 1 psi 0.068947572931783 bar 1 bar 14.503773773 psi Example: convert 50 psi to bar: 50 psi 725. From tire pressure to gas pressure and quite a few others. The system came into use in England about 1300 and was used primarily in the international wool trade.Ĭurrent Use: PSI is used worldwide to measure a lot of pressures. It is based on the avoirdupois system, a system that uses weights in terms of the avoirdupois pound, which was standardized in 1959. History : This unit finds its history in the imperial and American system of units of measure. One PSI is approximately 6.895 Pascal (N/m2). It is defined as the pressure created when a force of one pound-force is applied to a surface of one square inch. To be able to do this anyway, an average approximation is always used.ĭefinition : A PSI is a unit used worldwide. Because it is not the same everywhere, you cannot simply apply a conversion factor to convert PSI to Pa or bar. The pressure that a Pound delivers depends on gravity which is not the same everywhere on earth. The PSI is an American unit and stands for Pounds per Square Inch. 1 atmosphere is therefore 1013 millibars and 1013 hectopascals. In this case, 1 millibar is exactly equal to 1 hectopascal. To convert among any units in the left column, say from A to B, you can multiply by the factor for A to convert A into Pascals then divide by the factor for B to convert out. We assume you are converting between bar and pound/square inch.You can view more details on each measurement unit: bar or psi The SI derived unit for pressure is the pascal. To convert from Pa into units in the left column divide by the value in the right column or, multiply by the reciprocal, 1/x. How many bar in 1 psi The answer is 0.0689475728. Air pressure is also regularly expressed in millibars or hectopascals. More information from the unit converter. ![]() The atmosphere corresponds more closely to the average air pressure at sea level, and is defined as follows: 1 atm = 101.325 Pa so just over 1 bar. Meteorologists and weather forecasters worldwide use this unit, as an expression in Pascal would lead to much longer numerical results. Where atmospheric pressure equals 1013.25 mbar (101.325 kPa). Millibars (symbol: MB) is also commonly used to describe atmospheric pressure. We assume you are converting between pound/square inch and bar. The International Bureau of Weights and Measures, while indicating that authors are free to use bar, has not included it in the permitted list of the SI. How many psi in 1 bar The answer is 14.503773800722. The term “bar” comes from the Greek word “baros,” meaning weight.Ĭurrent usage : Although bar is the unit of pressure, it is not accepted by the International System of Units (SI) and is even disapproved in some areas. History: Bar was once introduced by Vilhelm Bjerknes, a Norwegian meteorologist who was at the forefront of modern weather forecasting. This unit is pretty much the standard reference when it comes to pressure. The bar is defined as 100,000 Pa, or 100 kPa. The bar is originally a British unit, and 1 bar roughly corresponds to the average air pressure at sea level (although 1 atmosphere (atm) is a better description). Symbols, abbreviations, or full names for units of length,Īrea, mass, pressure, and other types.However, Pascal is not the only unit used for pressure: You can find metric conversion tables for SI units, as wellĪs English units, currency, and other data. Its official symbol is "bar" the earlier "b" is now deprecated, but still often seen especially as "mb" rather than the proper "mbar" for millibars.Ĭonversion calculator for all types of measurement units. The bar is a measurement unit of pressure, equal to 1,000,000 dynes per square centimetre (baryes), or 100,000 newtons per square metre (pascals). It is the pressure resulting from a force of one pound-force applied to an area of one square inch. ![]() 1Psi 0. The pound per square inch or, more accurately, pound-force per square inch (symbol: psi or lbf/in² or lbf/in²) is a unit of pressure or of stress based on avoirdupois units. Result : 1 Psi 0.06895 Bar How to convert Psi to Bar 1 psi (Psi) is equal to 0.06895 bar (bar). 1 psi 0.0689475729 bar 1 bar 14.503773773 psi Example: convert 15 psi to bar: 15 psi 15 × 0.0689475729 bar 1. You can do the reverse unit conversion fromīar to psi, or enter any two units below: Enter two units to convert From: ![]()
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