pound per square inch [psi] to kilopound per square inch [ksi] Converter

Quick Reference

1 pound per square inch (psi) = 0.001 kilopound per square inch (ksi)

1 kilopound per square inch (ksi) = 1000 pound per square inch (psi)

How to Convert pound per square inch to kilopound per square inch

1 psi = 0.001 ksi
1 ksi = 1000 psi

To convert pound per square inch to kilopound per square inch, divide the value by 1000 (equivalently, multiply by 0.001). To convert kilopound per square inch back to pound per square inch, multiply by 1000.

Example: convert 10 psi to ksi:
10 psi = 10 x 0.001 = 0.01 ksi

↔ Convert kilopound per square inch to pound per square inch

pound per square inch

Definition: Pound per square inch (symbol: psi or lbf/in²) is a unit of pressure in the imperial and US customary systems. It is defined as the pressure resulting from a force of one pound-force applied to an area of one square inch.

History/origin: The pound per square inch is rooted in the English system of units. Its widespread use grew with the development of steam engines and other technologies requiring pressure measurements.

Current use: psi is commonly used in the United States for measuring tire pressure, hydraulic pressure, steam pressure, and the pressure of compressed gases. It's prevalent in automotive, manufacturing, and various engineering applications.

kilopound per square inch

Definition: Kip per square inch (symbol: ksi) is a unit of pressure equal to 1,000 psi (pounds per square inch).

History/origin: The kilopound per square inch is a practical unit derived from the pound per square inch (psi) to express large pressures in a more manageable form. It simplifies calculations and reduces the number of digits needed.

Current use: ksi is used in structural engineering, material science, and other fields where large pressures or stresses are involved. It is common for describing the tensile strength and yield strength of materials such as steel and concrete.

pound per square inch to kilopound per square inch Conversion Table

pound per square inch [psi]	kilopound per square inch [ksi]
1 psi	0.001 ksi
2 psi	0.002 ksi
5 psi	0.005 ksi
10 psi	0.01 ksi
20 psi	0.02 ksi
50 psi	0.05 ksi
100 psi	0.1 ksi
200 psi	0.2 ksi
500 psi	0.5 ksi
1000 psi	1 ksi

Common pairs of Pressure

pascal

pascal to kilopascal pascal to megapascal pascal to hectopascal pascal to bar pascal to torr

kilopascal

kilopascal to pascal kilopascal to megapascal kilopascal to hectopascal kilopascal to bar kilopascal to torr

megapascal

megapascal to pascal megapascal to kilopascal megapascal to hectopascal megapascal to bar megapascal to torr

hectopascal

hectopascal to pascal hectopascal to kilopascal hectopascal to megapascal hectopascal to bar hectopascal to torr

bar

bar to pascal bar to kilopascal bar to megapascal bar to hectopascal bar to torr

torr

torr to pascal torr to kilopascal torr to megapascal torr to hectopascal torr to bar

pound per square inch

pound per square inch to pascal pound per square inch to kilopascal pound per square inch to megapascal pound per square inch to hectopascal pound per square inch to bar

kilopound per square inch

kilopound per square inch to pascal kilopound per square inch to kilopascal kilopound per square inch to megapascal kilopound per square inch to hectopascal kilopound per square inch to bar

pound per square inch [psi] to kilopound per square inch [ksi] Converter

To convert pound per square inch to kilopound per square inch, enter your value in the psi field above and the result in ksi will appear instantly. You can also use the conversion factor shown in the table on this page to calculate manually. The formula is always the same: multiply your psi value by the fixed conversion ratio to get the equivalent in ksi.

Our pound per square inch to kilopound per square inch converter uses standardized conversion factors defined by international scientific and metrological organizations. All calculations are performed with full floating-point precision. You can also choose how many decimal places to display in the result, so you get exactly the level of detail you need.

Yes, absolutely. Simply swap the source and destination units in the converter — select ksi as your input unit and psi as your output unit. The same precision and standardized conversion factor applies in both directions.

Converting between pound per square inch and kilopound per square inch comes up regularly in engineering, scientific research, construction, and everyday tasks that involve measurements from different unit systems. Our converter eliminates the risk of manual calculation errors and saves time whenever you need to switch between these two units.

Yes, the pound per square inch to kilopound per square inch converter is completely free. No account or registration is required, and there are no usage limits. It works on any device — smartphones, tablets, and desktop computers — directly in your browser.

pound per square inch and kilopound per square inch are both units used to measure the same physical quantity, but they belong to different measurement systems or represent different scales. The mathematical relationship between them is fixed and constant, which is what makes accurate conversion possible. Scroll up to see the exact conversion factor, formula, and a reference table for common values.