This is true of most countries, including the United States. The kilopascal is more prevalent in scientific contexts such as material science, engineering, and geophysics. 7.9 bars 115 pounds per square inch: 8 bars 116 pounds per square inch: 8. This converter can help you to get answers to questions like. Exceptions include certain countries that use either the imperial or United States customary systems of measurement, such as the United States, in which the unit of pound per square inch is more commonly used. Value in psi 7 1 / 2 × 14.503773800722 108.778 pounds per square inch. A pressure of 1 bar is slightly less than the current average atmospheric pressure on Earth at sea level (approximately 1.013 bar). In 1971, at the 14 th General Conference on Weights and Measures, the pascal was adopted as an SI derived unit of pressure.Ĭurrent use: The kilopascal is widely used worldwide in countries that have adopted SI. The bar is a metric unit of pressure, but not part of the International System of Units (SI) it is defined as 100,000 Pa (100 kPa). The kilopascal is simply a multiple of the pascal, as is common within SI. History/origin: The unit, pascal, is named after Blaise Pascal, a French mathematician and physicist. A kilopascal is defined as 1,000 Pa, where 1 Pa is defined as the pressure exerted by a 1 newton force applied perpendicularly to an area of one square meter, expressed as 1 N/m 2 or 1 kg/m Kilopascalĭefinition: A kilopascal (symbol: kPa) is a multiple of the pascal (Pa), an SI (International System of Units) derived unit of pressure used to measure internal pressure, Young's modulus, stress, and ultimate tensile strength. Meteorologists and weather reporters worldwide often use this unit for convenience, since working in pascals would result in much larger values. 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. 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. It is equal to 0.987 atmospheres (101,325 Pa), the unit often used as a reference of standard pressure. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types.Definition: A bar (symbol: bar) is a metric unit of pressure that is defined as exactly 100,000 pascals (symbol: Pa). A pressure of 1 Pa is small, which approximately equals the pressure exerted by a dollar bill resting flat on a table. The SI unit of pressure is the pascal, symbol Pa. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Pressure (the symbol: p) is the ratio of force to the area over which that force is distributed, and it is the amount of force acting per unit area. Using the conversion formula above, you will get: Value in psi 7.7 × 14.503773800722 111. 710 Liquid: no requirement No code requirement Neither are code but 710. It is the pressure resulting from a force of one pound-force applied to an area of one square inch.Ĭ provides an online conversion calculator for all types of measurement units. Suppose you want to convert 7.7 bar into pounds per square inch. bar) < 70 PSI (4,76 bar) 2 PSI (0,14 bar) S 70 3 above 70 PSI (4,76 bar) 10. 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. The SI unit is the pascal (Pa), with 1 millibar = 100 pascals (a hectopascal) It is not an SI unit of measure, however it is one of the units used in meteorology when describing atmospheric pressure. millibar to kilogram-force/square millimeterĪ millibar (mb) is 1/1000th of a bar, a unit for measurement of pressure.Psi to millibar, or enter any two units below: Enter two units to convert From: You can do the reverse unit conversion from
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