kPa to PSI Converter
Convert kilopascals (kPa) to pounds per square inch (psi) instantly. Type a value — the result updates as you type, and the swap button converts the other way.
kPa to psi formula
psi = kPa × 0.1450377377
1 kilopascal = 0.145 pounds per square inch · 1 pound per square inch = 6.89 kilopascals
To convert kilopascals to pounds per square inch, multiply the value by 0.1450377377. For example, 220 kPa:
psi = 220 × 0.1450377377psi = 31.908302
So 220 kPa = 31.91 psi.
Mental math shortcut
Quick mental estimate: divide by 7. For 220 kPa that gives about 31.9 psi — within 1% of the exact answer. Use the exact formula when precision matters.
kPa to psi conversion table
psi back to kPa
The same values converted the other way, rounded for everyday use:
| Pounds per square inch | Kilopascals |
|---|---|
| 14.5 psi | 99.97 kPa |
| 14.7 psi | 101.35 kPa |
| 29.01 psi | 200.02 kPa |
| 31.91 psi | 220.01 kPa |
| 36.26 psi | 250 kPa |
| 43.51 psi | 299.99 kPa |
| 72.52 psi | 500.01 kPa |
| 145.04 psi | 1000.02 kPa |
About the units
Kilopascals (kPa)
Pounds per square inch (psi)
Pounds per square inch is the US unit of pressure, used for tires and air compressors. 1 psi ≈ 0.0689 bar.
Frequently asked questions
How many pounds per square inch are in a kilopascal?
One kilopascal equals 0.145 pounds per square inch.
What is 220 kPa in psi?
220 kPa = 31.91 psi.
How do I convert psi back to kPa?
Divide the pounds per square inch by 0.1450377377. Or use the PSI to kPa converter.