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Kilopascals to PSI Converter

1 kPa = 0.145038 psi. Atmospheric pressure = 101.325 kPa = 14.696 psi. Car tires: 207–248 kPa.

Inverse conversion

1 psi = 6.89476 kPa. Atmospheric pressure = 14.696 psi = 101.325 kPa. Tire pressure: 30–36 psi.

PSI to Kilopascals

Formula

Formula

psi = kPa × 0.145038

Worked example

A tire inflated to 220 kPa: 220 × 0.145038 = 31.91 psi.

Quick reference table

kPapsi
101.450377
202.900755
507.251887
10014.503774
20029.007548
30043.511321
50072.518869
1000145.037738

Unit definitions

Kilopascal (kPa)

The kilopascal (kPa) = 1,000 Pa. Standard unit for tire pressure in metric-using countries. Normal atmospheric pressure ≈ 101.325 kPa.

PSI (psi)

PSI (pounds per square inch) = lbf/in². The standard pressure unit in the US for tire pressure, hydraulics, and compressed air.

Common use cases

  • Tire pressure: metric countries use kPa, US uses psi
  • Blood pressure (kPa in clinical contexts)
  • HVAC and refrigeration systems
  • Hydraulic system specifications

Related guides

Frequently asked questions