KilopascalDefinition: 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. 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/m2 or 1 kg/m·s2.History/origin: The unit, pascal, is named after Blaise Pascal, a French mathematician and physicist. The kilopascal is simply a multiple of the pascal, as is common within SI.In 1971, at the 14th General Conference on Weights and Measures, the pascal was adopted as an SI derived unit of pressure.Current use: The kilopascal is widely used worldwide in countries that have adopted SI. 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. The kilopascal is more prevalent in scientific contexts such as material science, engineering, and geophysics. This is true of most countries, including the United States.Pound-force per square inchDefinition: A pound-force per square inch (symbol: psi) is an imperial and US customary unit of pressure based on avoirdupois units. It is defined as the pressure that results when a force of one pound-force is applied to a one-square-inch area. One psi is approximately 6,895 pascals (N/m2).History/origin: Pound-force per square inch is a unit that originated in the imperial and US customary systems of units. It is based on the avoirdupois system, a system that uses weights in terms of the avoirdupois pound, which was standardized in 1959. The system is believed to have come into use in England around 1300 and was used in the international wool trade. As such, the prototype pound at the time was known as the avoirdupois wool pound.Current use: 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.Kilopascal to Psi Conversion TableKilopascal [kPa]Psi [psi]0.01 kPa0.0014503774 psi0.1 kPa0.0145037738 psi1 kPa0.1450377377 psi2 kPa0.2900754755 psi3 kPa0.4351132132 psi5 kPa0.7251886887 psi10 kPa1.4503773773 psi20 kPa2.9007547546 psi50 kPa7.2518868865 psi100 kPa14.503773773 psi1000 kPa145.03773773 psiHow to Convert Kilopascal to Psi1 kPa = 0.1450377377 psi1 psi = 6.8947572932 kPaExample: convert 15 kPa to psi:15 kPa = 15 × 0.1450377377 psi = 2.175566066 psiPopular Pressure Unit ConversionsConvert Kilopascal to Other Pressure Units , Instant free online tool for kilopascal to psi conversion or vice versa. The kilopascal [kPa] to psi [psi] conversion table and conversion steps are also listed. Also, explore tools to convert kilopascal or psi to other pressure units or learn more about pressure conversions., More information from the unit converter How many kPa in 1 PSI? The answer is 6.89475728. We assume you are converting between kilopascal and pound/square inch. You can view more details on each measurement unit: kPa or PSI The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.001 kPa, or 0.00014503773800722 PSI. Note that rounding errors may occur, so always check the results .