kPa to psi converter
Type a number in either box to convert between kilopascals and pounds per square inch. It works both ways and nothing is sent anywhere.
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How many psi is a kPa?
To convert kilopascals to pounds per square inch, multiply by 0.14503774. One kPa is 0.14503774 psi, and one psi is 6.8947573 kPa, so to go the other way multiply pounds per square inch by 6.8947573 or divide by 0.14503774. The factor is exact as defined: one pound-force per square inch is 6.894757293168 kilopascals. Type a number in either box below and the other one updates at once.
How to convert kilopascals and pounds per square inch
1 kPa = 0.14503774 psi, and 1 psi = 6.8947573 kPa. The factor is exact as defined: one pound-force per square inch is 6.894757293168 kilopascals.
One kPa is 0.145038 psi, so divide kPa by 6.895 to get psi. A quick check: 100 kPa is about 14.5 psi, and 220 kPa is about 32 psi, a common tire pressure. In the other direction, multiply psi by 6.895.
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Common values
These are the conversions people look up most often, worked out from the exact factor and rounded to six significant digits.
| Kilopascals | equals | Pounds per square inch | equals |
|---|---|---|---|
| 1 kPa | 0.145038 psi | 1 psi | 6.89476 kPa |
| 10 kPa | 1.45038 psi | 10 psi | 68.9476 kPa |
| 101.325 kPa | 14.6959 psi | 101.325 psi | 698.611 kPa |
| 200 kPa | 29.0075 psi | 200 psi | 1,378.95 kPa |
| 220 kPa | 31.9083 psi | 220 psi | 1,516.85 kPa |
| 240 kPa | 34.8091 psi | 240 psi | 1,654.74 kPa |
| 250 kPa | 36.2594 psi | 250 psi | 1,723.69 kPa |
| 300 kPa | 43.5113 psi | 300 psi | 2,068.43 kPa |
| 500 kPa | 72.5189 psi | 500 psi | 3,447.38 kPa |
Where you meet it in Canada
Canadian car tire placards list both: a typical door-jamb sticker shows 220 kPa (32 psi) or 240 kPa (35 psi), so you can use a US-style gauge or a metric one. Weather reports in Canada give atmospheric pressure in kPa, where standard pressure is 101.325 kPa (14.696 psi), and water pressure at a tap is often 40 to 80 psi, which is 276 to 552 kPa. Bike tires, hydraulics and compressors are often in psi or bar.
When to use it
- Setting tire pressure with a gauge in the other unit
- Reading a compressor, pump or water pressure rating
- Converting a weather pressure to psi
- Matching a bike or hydraulic spec
Mistakes it helps you avoid
- Confusing kPa with MPa (1 MPa is 1,000 kPa).
- Setting the pressure from the max on the tire sidewall instead of the vehicle placard.
- Mixing gauge pressure with absolute pressure.
- Dividing by 6.9 for a precise reading when the exact value is 6.894757.
The formula
One multiplication each way.
psi = kPa × 0.14503774kPa = psi × 6.8947573 (or psi ÷ 0.14503774)
The factor is exact as defined: one pound-force per square inch is 6.894757293168 kilopascals. The result is rounded for display only; the figure in the box keeps up to eight significant digits. Factors come from NIST SP 811 Appendix B.
Example: 220 kPa in pounds per square inch
Convert 220 kilopascals to pounds per square inch.
- Factor1 kPa = 0.14503774 psi
- Multiply220 × 0.14503774 = 31.9083
220 kPa = 31.9083 psi
Check: 31.9083 ÷ 0.14503774 gives back 220.
Terms on this page
- Kilopascal (kPa)
- One thousand pascals.
- psi
- Pounds-force per square inch, 6.894757293168 kPa.
Common questions
How many pounds per square inch are in one kPa?
One kPa is 0.14503774 psi.
How many kilopascals are in one psi?
One psi is 6.8947573 kPa.
Is the kPa to psi factor exact?
The factor is exact as defined: one pound-force per square inch is 6.894757293168 kilopascals.
What is 32 psi in kPa?
220.6 kPa.
What is standard atmospheric pressure in psi?
101.325 kPa is 14.696 psi.
Is anything I type sent to a server?
No. The conversion happens in your browser and nothing you enter leaves your device.
Where these numbers come from
- NIST — Guide for the Use of the International System of Units, Appendix B.8 (conversion factors) The exact definitions used here, such as 1 inch = 2.54 centimetres and 1 pound = 0.45359237 kilograms.
- Wikipedia — Pounds per square inch The unit and its exact value in pascals.
Last verified 2026-10-25 The method on this page is checked against the sources above at least once a year. Spotted something out of date? Tell us and we will fix it.
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