Kilopascal to Pound per Square Inch Formula
psi = kPa x 0.145038
Conversion factors follow SI relationships published by BIPM and NIST, where those standards apply.
Kilopascal to Pound per Square Inch Converter
Quick Answer
1 kPa = 0.145038 psi
Formula: Pound per Square Inch = Kilopascal x 0.145038
Quick values
Worked examples
Convert 1 kPa to psi
psi = 1 x 0.145038
Result: 1 kPa = 0.145038 psi
Convert 10 kPa to psi
psi = 10 x 0.145038
Result: 10 kPa = 1.45038 psi
Convert 100 kPa to psi
psi = 100 x 0.145038
Result: 100 kPa = 14.5038 psi
About Kilopascal and Pound per Square Inch
The kilopascal (kPa) and the pound per square inch (psi) both measure pressure. 1 kPa equals 0.145038 psi.
Category hub: Pressure Conversion · Conversion charts · Conversion formulas
Kilopascal to Pound per Square Inch Conversion Table
| Kilopascal (kPa) | Pound per Square Inch (psi) |
|---|---|
| 1 kPa | 0.145038 psi |
| 10 kPa | 1.45038 psi |
| 50 kPa | 7.25189 psi |
| 100 kPa | 14.5038 psi |
| 200 kPa | 29.0075 psi |
| 300 kPa | 43.5113 psi |
| 500 kPa | 72.5189 psi |
| 700 kPa | 101.526 psi |
| 1000 kPa | 145.038 psi |
| 2000 kPa | 290.075 psi |
Browse all conversion charts → · Browse conversion formulas →
Practical use cases for Kilopascal to Pound per Square Inch
Tire and Vehicle Service
Passenger-car tire placards in the US are often in PSI, while many gauges and shop manuals list kPa or bar. Converting before inflation avoids under- or over-pressurizing a tire.
HVAC and Hydronics
Boiler, chiller, and duct-pressure specs mix PSI, kPa, and inches of water. Field techs convert so setpoints match the equipment nameplate.
Process and Plant Engineering
P&IDs and relief-valve datasheets may use PSI, bar, or kPa depending on the region. Accurate conversion is required before sizing piping and safety devices.
Meteorology and Aviation
Altimeter and station-pressure reports use inHg, hPa, or kPa. Pilots and weather desks convert between those scales for briefings and QNH settings.
Medical and Laboratory Gases
Cylinder pressures and ventilator settings are published in different units by manufacturer and country. Clinicians convert to the unit on the local gauge.
Hydraulics and Pneumatics
Pump and compressor curves are often published in bar or kPa while US shop drawings stay in PSI. Converting keeps actuator force and regulator settings consistent.
Kilopascal to Pound per Square Inch FAQs
Common questions about converting kilopascal to pound per square inch.
How do you convert kilopascal to pound per square inch?
Use psi = kPa x 0.145038. For example, 1 kPa = 0.145038 psi.
What is 1 kPa in pound per square inch?
1 kPa = 0.145038 psi. See the conversion table above for more values.
Where does the kilopascal to pound per square inch factor come from?
The calculator uses the shared conversion library aligned with SI relationships published by NIST and BIPM where those standards apply.
Is this kilopascal to pound per square inch converter free?
Yes. The calculator and the printable reference table are completely free, with no sign-up required.
Charts and printable PDF
Use the matching kilopascal / pound per square inch chart when you need a printable table or offline reference.
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