Kilopascals to Psi
An instant kilopascals-to-psi converter, with the formula and a reference table below.
| Kilopascals | Psi |
|---|---|
| 1 kPa | 0.145038 psi |
| 2 kPa | 0.290075 psi |
| 3 kPa | 0.435113 psi |
| 5 kPa | 0.725189 psi |
| 10 kPa | 1.450377 psi |
| 25 kPa | 3.625943 psi |
| 50 kPa | 7.251887 psi |
| 100 kPa | 14.503774 psi |
How to use
- Enter a value in the Kilopascals field.
- The Psi figure appears immediately — no button to press.
- Typing in the Psi field converts back to Kilopascals the same way.
- Use the reference table for the values that come up most often.
Kilopascals to Psi formula
The factor from kilopascals to psi is 0.145037738.
psi = kPa × 0.145037738
Why this factor: the kilopascal and the pound per square inch are both defined against the pascal, so dividing one definition by the other gives 0.145037738 directly. Both definitions are set out in full below.
To go the other way, divide by 0.145037738 — or use the Psi to Kilopascals converter, which is the same calculation reversed.
Worked example
Take 760 kPa and multiply by the factor 0.145037738: the result is 110.228681 psi.
760 kPa × 0.145037738 = 110.228681 psi
The converter above does this for any value you type, in either direction.
What is a kilopascal?
A kilopascal is 1,000 pascals, the practical metric pressure unit.
Definition: Exactly 1,000 pascals. Standard atmospheric pressure is 101.325 kPa.
Where it is used: Tyre pressures outside the US, weather reports in Canada, and structural engineering loads.
What is a pound per square inch?
Pounds per square inch is the standard pressure unit in the United States.
Definition: One pound-force per square inch, which is about 6,894.757 pascals.
Where it is used: US tire pressure, compressed air and hydraulic systems, and plumbing water pressure.
Kilopascals vs Psi
The kilopascal is a metric unit while the pound per square inch is a US customary unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many psi are in a kilopascal?
One kilopascal equals 0.145037738 psi.
What is the formula to convert kilopascals to psi?
Multiply the number of kilopascals by 0.145037738. To reverse it, divide by 0.145037738 instead.
How do I convert psi back to kilopascals?
Divide by 0.145037738, which is the same as multiplying by 6.89475729.
How many psi are in 10 kilopascals?
10 kPa works out to 1.450377 psi.
How is the kilopascal defined?
Exactly 1,000 pascals. Standard atmospheric pressure is 101.325 kPa.