Home / Pressure Conversion / Convert psi to kpa

Convert psi to kpa

Please provide values below to convert psi [psi] to kilopascal [kPa], or vice versa.

From: psi
To: kilopascal

Pound-force per square inch

Definition: 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.


Definition: 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.

Psi to Kilopascal Conversion Table

Psi [psi]Kilopascal [kPa]
0.01 psi0.0689475729 kPa
0.1 psi0.6894757293 kPa
1 psi6.8947572932 kPa
2 psi13.7895145864 kPa
3 psi20.6842718795 kPa
5 psi34.4737864659 kPa
10 psi68.9475729318 kPa
20 psi137.8951458636 kPa
50 psi344.7378646589 kPa
100 psi689.4757293178 kPa
1000 psi6894.7572931783 kPa

How to Convert Psi to Kilopascal

1 psi = 6.8947572932 kPa
1 kPa = 0.1450377377 psi

Example: convert 15 psi to kPa:
15 psi = 15 × 6.8947572932 kPa = 103.4213593977 kPa

Popular Pressure Unit Conversions

Convert Psi to Other Pressure Units