Pressure converter
Kilopascals to PSI
If you need to know how many PSI one Kilopascals contains, the answer is 0.14503774. The conversion is linear, so 10 kPa is 1.450377 psi and 100 kPa is 14.503774 psi. Use the converter for any other value.
Formula 1 kPa = 0.14503774 psi
Need the other direction? PSI to Kilopascals.
How to convert Kilopascals to PSI
A kilopascal is 1,000 pascals and is common in weather and engineering. One pound per square inch is about 6,894.76 pascals.
To convert Kilopascals to PSI, multiply the value in kPa by 0.14503774. For example, 10 kPa × 0.14503774 = 1.450377 psi. This works because the ratio between the two units is constant for every value in pressure.
Worked examples
| kPa | psi |
|---|---|
| 1 kPa | 0.14503774 psi |
| 2.5 kPa | 0.36259434 psi |
| 5 kPa | 0.72518869 psi |
| 10 kPa | 1.450377 psi |
| 25 kPa | 3.625943 psi |
| 50 kPa | 7.251887 psi |
| 100 kPa | 14.503774 psi |
Reverse conversion
| psi | kPa |
|---|---|
| 1 psi | 6.894757 kPa |
| 5 psi | 34.473786 kPa |
| 10 psi | 68.947573 kPa |
| 25 psi | 172.368932 kPa |
| 50 psi | 344.737865 kPa |
| 100 psi | 689.475729 kPa |
When this conversion is useful
This is the calculation you need when you are inflating a tyre, reading a barometer or checking an engineering spec. Because the factor is fixed, you can use the same number for a single measurement or for a batch: 1,000 kPa is 145.037738 psi.
Is the conversion exact?
Yes for practical use: the factors come from international definitions, with rounding applied only for display.
Reference: BIPM SI Brochure and NIST SP 811. Last reviewed: 2026-11-01.
kPa to psi conversion chart
The chart lists the most requested values. For a value that is not here, use the converter at the top of the page.
| Kilopascals (kPa) | PSI (psi) |
|---|---|
| 1 kPa | 0.14503774 psi |
| 2 kPa | 0.29007548 psi |
| 3 kPa | 0.43511321 psi |
| 4 kPa | 0.58015095 psi |
| 5 kPa | 0.72518869 psi |
| 6 kPa | 0.87022643 psi |
| 7 kPa | 1.015264 psi |
| 8 kPa | 1.160302 psi |
| 9 kPa | 1.30534 psi |
| 10 kPa | 1.450377 psi |
| 11 kPa | 1.595415 psi |
| 12 kPa | 1.740453 psi |
| 13 kPa | 1.885491 psi |
| 14 kPa | 2.030528 psi |
| 15 kPa | 2.175566 psi |
| 16 kPa | 2.320604 psi |
| 17 kPa | 2.465642 psi |
| 18 kPa | 2.610679 psi |
| 19 kPa | 2.755717 psi |
| 20 kPa | 2.900755 psi |
| 21 kPa | 3.045792 psi |
| 22 kPa | 3.19083 psi |
| 23 kPa | 3.335868 psi |
| 24 kPa | 3.480906 psi |
| 25 kPa | 3.625943 psi |
| 26 kPa | 3.770981 psi |
| 27 kPa | 3.916019 psi |
| 28 kPa | 4.061057 psi |
| 29 kPa | 4.206094 psi |
| 30 kPa | 4.351132 psi |
| 31 kPa | 4.49617 psi |
| 32 kPa | 4.641208 psi |
| 33 kPa | 4.786245 psi |
| 34 kPa | 4.931283 psi |
| 35 kPa | 5.076321 psi |
| 36 kPa | 5.221359 psi |
| 37 kPa | 5.366396 psi |
| 38 kPa | 5.511434 psi |
| 39 kPa | 5.656472 psi |
| 40 kPa | 5.80151 psi |
| 41 kPa | 5.946547 psi |
| 42 kPa | 6.091585 psi |
| 43 kPa | 6.236623 psi |
| 44 kPa | 6.38166 psi |
| 45 kPa | 6.526698 psi |
| 46 kPa | 6.671736 psi |
| 47 kPa | 6.816774 psi |
| 48 kPa | 6.961811 psi |
| 49 kPa | 7.106849 psi |
| 50 kPa | 7.251887 psi |
| 60 kPa | 8.702264 psi |
| 70 kPa | 10.152642 psi |
| 80 kPa | 11.603019 psi |
| 90 kPa | 13.053396 psi |
| 100 kPa | 14.503774 psi |
Frequently asked questions
How many PSI are in 1 Kilopascals?
1 kPa equals 0.14503774 psi.
How do I convert Kilopascals to PSI?
Multiply the kPa value by 0.14503774. Example: 25 kPa = 3.625943 psi.
What is 2.5 kPa in psi?
2.5 kPa = 0.36259434 psi.
Is the kPa to psi conversion exact?
Yes for practical use: the factors come from international definitions, with rounding applied only for display.
Does the calculator work offline?
Yes. The conversion runs in your browser with JavaScript, so it works after the page has loaded, even without a connection.