It is wrong to conclude that 2 PSIA is equal to -27.4 PSIG this is not how the PSIA to PSIG conversion works. Note about wrong conversion: 1 PSIA is equal to -13.7 PSIG. As we can see, at sea level, 80 PSIA is equal to 65.3 PSIG. Psi to Kilopascal Conversion Table Psi ġ5 psi = 15 × 6.8947572932 kPa = 103. Here is how we can calculate this using PSIG to PSIA formula at sea level: 80 PSIA 14.7 PSI 65.3 PSIG. 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. 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. 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 kilopascal is simply a multiple of the pascal, as is common within SI. 00 pascal Pa bar to pascal, pascal to bar. History/origin: The unit, pascal, is named after Blaise Pascal, a French mathematician and physicist. pascal Pa 1 kilopascal kPa 1000 pascal Pa kilopascal to pascal, pascal to kilopascal. 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. 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. 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. ![]() 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). The symbol for pounds per square inch is psi or lbf/in 2. What is pounds per square inch (psi) Pounds per square inch (or pound-force per square inch) is a non-SI unit of Pressure. It is defined as the pressure that results when a force of one pound-force is applied to a one-square-inch area. The following is a list of definitions relating to conversions between psi and pascals. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types.Definition: A pound-force per square inch (symbol: psi) is an imperial and US customary unit of pressure based on avoirdupois units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. 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. 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 unit is named after Blaise Pascal, the eminent French mathematician, physicist and philosopher. The pressure p in pascal (Pa) is equal to the pressure p in psi (Psi) times 6894. The pascal (symbol Pa) is the SI unit of pressure.It is equivalent to one newton per square metre. 1 psi (Psi) is equal to 6894.75729 pascal (Pa). ![]() The definition of a pascal is as follows: The SI prefix "mega" represents a factor of Psi to megapascal, or enter any two units below: Enter two units to convert From: You can do the reverse unit conversion from Pa pascals it's the SI unit equal to one kilogram per square meter psi pounds per square inch 1 psi approximately equals 6895 Pa bar it's the metric unit (not part of SI) equal to 100,000 Pa mmHg millimeter of mercury 1 mmHg approximately equals 133 Pa inHg inch of mercury 1 inHg approximately equals 0.49.
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