kPa to PSI Converter
Convert kPa to psi and back. Enter kilopascals (or switch to psi) to get pounds per square inch, plus bar and atmosphere equivalents.
Example: with Pressure 100 · Direction kPa → psi → Result: 14.5038 psi.
- Bar and atmospheres1 bar · 0.9869 atm
- Conversion100 kPa / 6.894757 = 14.5038 psi
Computed by the calculator below using its default values. Change any input to see your own numbers.
psi = kPa ÷ 6.894757. One pound-force per square inch equals 6.894757 kilopascals, so kPa readings run roughly seven times the psi number.
Pounds per square inch versus kilopascals
Pressure is force spread over area, and psi and kPa simply measure it in different units — pounds over square inches versus newtons over square meters. The bridge between them is fixed: one psi is 6.894757 kPa, so dividing kilopascals by that constant lands you in psi.
The unit you meet depends on the field. Tire shops, US plumbing, and compressed-air systems run on psi, while science, many car manuals outside the US, and HVAC data use kPa. Because one atmosphere is 101.325 kPa or 14.696 psi, a fast gut check is that a kPa reading is about seven times the psi number.
How it’s calculated
psi = kPa ÷ 6.894757; kPa = psi × 6.894757. One pound-force per square inch equals 6.894757 kilopascals (NIST). Bar = kPa ÷ 100; atmospheres = kPa ÷ 101.325.
Converts the unit only; it does not shift between gauge and absolute references, so make sure both sides are on the same basis.
kPa to psi reference
| kPa | psi | Where you see it |
|---|---|---|
| 1 kPa | 0.145 psi | small pressures |
| 100 kPa | 14.504 psi | near 1 atmosphere |
| 101.325 kPa | 14.696 psi | standard sea level |
| 220 kPa | 31.909 psi | car tire, cold |
| 700 kPa | 101.53 psi | road bike tire |
Computed as kPa ÷ 6.894757 (1 psi = 6.894757 kPa, NIST).
Common mistakes
- Treating a gauge reading in kPa as if it were absolute — gauge and absolute differ by about 101.3 kPa (see the psig to psia tool).
- Rounding 6.894757 to 7, which introduces about 1.5% error on every value.
- Confusing kPa with bar or kgf/cm2; one bar is 100 kPa, not 1 kPa.
Frequently asked questions
How do I convert kPa to psi?
Divide the kilopascal value by 6.894757. For example, 100 kPa ÷ 6.894757 = 14.50 psi.
How many kPa are in 1 psi?
One psi equals 6.894757 kPa. So to convert psi to kPa you multiply by 6.894757.
Does kPag convert to psi the same way?
Yes. Gauge and absolute use the same 6.894757 factor: kPa gauge becomes psi gauge, kPa absolute becomes psi absolute. The factor changes only the unit, not the reference point.
What is 100 kPa in psi?
About 14.50 psi. That is close to standard atmospheric pressure, which is 101.325 kPa or 14.696 psi.