Kilopascal to Psi Converter
Enter the value that you want to convert kilopascal (kPa) to psi or psi to kilopascal.
1 kilopascal = 0.1450377 psi
Formula: psi = kilopascal value × 0.1450377
kilopascal to psi
10 kilopascal = 1.45038 psi
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Kilopascal to Psi: The Essentials
The Kilopascal in Engineering
Kilopascal (kPa) is a unit of pressure measurement. 1 kilopascal is equal to 0.1450377 psi.
What is Psi?
Psi (psi) is a unit of pressure measurement. 1 psi is equal to 6.8947573 kilopascal.
Pressure Units Across Industries
Pressure measurements vary dramatically by industry. Meteorologists report in millibars or hectopascals, tire shops use PSI, scuba divers think in atmospheres or bar, vacuum engineers work in torr, and hydraulic systems specify in megapascals. A single industrial plant might encounter all these units across different equipment manuals, safety datasheets, and regulatory standards from different countries.
kilopascal to psi metric conversion table
| 0.01 kPa | = | 0.00145 psi |
| 0.1 kPa | = | 0.01450 psi |
| 1 kPa | = | 0.14504 psi |
| 2 kPa | = | 0.29008 psi |
| 3 kPa | = | 0.43511 psi |
| 4 kPa | = | 0.58015 psi |
| 5 kPa | = | 0.72519 psi |
| 6 kPa | = | 0.87023 psi |
| 7 kPa | = | 1.01526 psi |
| 8 kPa | = | 1.16030 psi |
| 9 kPa | = | 1.30534 psi |
| 10 kPa | = | 1.45038 psi |
| 11 kPa | = | 1.59542 psi |
| 12 kPa | = | 1.74045 psi |
| 13 kPa | = | 1.88549 psi |
| 14 kPa | = | 2.03053 psi |
| 15 kPa | = | 2.17557 psi |
| 16 kPa | = | 2.32060 psi |
| 17 kPa | = | 2.46564 psi |
| 18 kPa | = | 2.61068 psi |
| 19 kPa | = | 2.75572 psi |
| 20 kPa | = | 2.90075 psi |
| 30 kPa | = | 4.35113 psi |
| 40 kPa | = | 5.80151 psi |
| 50 kPa | = | 7.25189 psi |
| 60 kPa | = | 8.70226 psi |
| 70 kPa | = | 10.15264 psi |
| 80 kPa | = | 11.60302 psi |
| 90 kPa | = | 13.05340 psi |
| 100 kPa | = | 14.50377 psi |
| 200 kPa | = | 29.00755 psi |
| 300 kPa | = | 43.51132 psi |
| 400 kPa | = | 58.01510 psi |
| 500 kPa | = | 72.51887 psi |
| 600 kPa | = | 87.02264 psi |
| 700 kPa | = | 101.52642 psi |
| 800 kPa | = | 116.03019 psi |
| 900 kPa | = | 130.53396 psi |
| 1000 kPa | = | 145.03774 psi |
How to Convert Kilopascal to Psi?
We can convert kilopascal to psi by using an example.
Example:
Convert 20 Kilopascal to Psi?
We know 1 Kilopascal = 0.1450377 psi; 1 Psi = 6.8947573 kilopascal.
20 kilopascal = ___psi
20 × 0.1450377 = 2.90075 psi (we know 1 kilopascal = 0.1450377 psi)
Answer:
20 kilopascal = 2.90075 psi
How to Convert kPa to PSI (Step-by-Step)
Converting kilopascals to PSI is needed when translating metric tire specifications to US gauges, or when reading Japanese/Australian vehicle specifications with American tools. The conversion factor is 1 kPa = 0.145038 PSI.
- Write down the pressure value in kPa.
- Multiply the kPa value by 0.145038.
- The result is the equivalent pressure in PSI.
- For quick estimation, divide kPa by 7 (undershoots by ~1.5%).
Common kPa to PSI Conversions
Metric tire pressures and common engineering values converted to PSI for US gauge users.
| Kilopascal | Psi |
|---|---|
| 101.3 kPa | 14.7 PSI |
| 180 kPa | 26.1 PSI |
| 200 kPa | 29.0 PSI |
| 220 kPa | 31.9 PSI |
| 240 kPa | 34.8 PSI |
| 280 kPa | 40.6 PSI |
| 350 kPa | 50.8 PSI |
| 500 kPa | 72.5 PSI |
| 700 kPa | 101.5 PSI |
Solved Examples: kPa to PSI
Question 1: A Subaru imported from Japan requires 230 kPa front / 220 kPa rear. What should you set on a PSI gauge?
Solution:
Front: 230 × 0.145038 = 33.36 PSI → round to 33 PSI
Rear: 220 × 0.145038 = 31.91 PSI → round to 32 PSI
Answer: Set front tires to 33 PSI and rear tires to 32 PSI.
Question 2: A tire pressure monitoring system (TPMS) triggers a warning at 180 kPa. What PSI does this correspond to?
Solution:
Pressure in PSI = 180 × 0.145038
= 26.11 PSI
Answer: 180 kPa = 26.1 PSI — significantly underinflated and unsafe for highway driving.
Question 3: An Australian weather station reports atmospheric pressure as 100.8 kPa. Convert to PSI.
Solution:
Pressure in PSI = 100.8 × 0.145038
= 14.62 PSI
Answer: 100.8 kPa = 14.62 PSI (slightly below standard atmosphere — low pressure system).
Question 4: A hydraulic line is rated at 2500 kPa. What is the PSI equivalent?
Solution:
Pressure in PSI = 2500 × 0.145038
= 362.59 PSI
Answer: 2500 kPa = 362.6 PSI — suitable for light hydraulic applications.
Practice Questions: kPa to PSI
Try solving these on your own to test your understanding:
- Convert 250 kPa to PSI. (Answer: 36.3 PSI)
- A soccer ball is inflated to 90 kPa gauge pressure. What is this in PSI? (Answer: 13.1 PSI)
- Convert 150 kPa to PSI. (Answer: 21.8 PSI)
- A natural gas line operates at 400 kPa. Express in PSI. (Answer: 58.0 PSI)
- Convert 1000 kPa to PSI. (Answer: 145.0 PSI)
TPMS Warnings: Understanding kPa Thresholds
Tire Pressure Monitoring Systems on Japanese and Korean vehicles often display warnings in kPa. The typical low-pressure threshold is 25% below recommended — so if your placard says 230 kPa, the TPMS warning triggers around 170-180 kPa (25-26 PSI). At this level, tire sidewalls flex excessively, generating heat that can cause blowouts at highway speed. Checking tire pressure monthly catches slow leaks before TPMS activation.
Metric vs. Imperial: Automotive Industry Transition
Most modern vehicles are designed with metric specifications regardless of market. A car sold in the US may have a tire placard in PSI, but the engineering spec was originally in kPa. Toyota, Honda, Subaru, and Hyundai internal specs use kPa. When working on JDM imports or reading factory service manuals, you will encounter kPa throughout. US aftermarket parts catalogs are gradually adding kPa ratings alongside PSI.
kPa in Sports Equipment Regulations
FIFA requires match soccer balls to be inflated to 60-110 kPa (8.7-16.0 PSI) above atmospheric pressure. The NFL specifies 86-93 kPa (12.5-13.5 PSI) gauge pressure for footballs — the "Deflategate" controversy centered on a mere 14 kPa (2 PSI) difference. Rugby balls require 66-69 kPa (9.5-10.0 PSI). Understanding kPa helps when equipment regulations reference metric specifications.
Key Takeaways
- Multiply kPa by 0.145038 to get PSI (or divide by 7 for a quick estimate).
- 101.3 kPa = 14.7 PSI = 1 standard atmosphere.
- Japanese/Australian tire pressures (200-250 kPa) = 29-36 PSI.
- TPMS low-pressure warnings typically trigger at 170-180 kPa (25-26 PSI).
- FIFA soccer ball pressure: 60-110 kPa (8.7-16.0 PSI) gauge.
- Always check if kPa values are gauge pressure or absolute pressure.
Kilopascal to Psi Conversion Formula
psi = kilopascal × 0.1450377
1 kilopascal = 0.1450377 psi
1 psi = 6.8947573 kilopascal
Reverse: kilopascal = psi × 6.8947573
Frequently Asked Questions
How many psi are in 1 kilopascal?
There are 0.1450377 psi in 1 kilopascal. To convert kilopascal to psi, multiply the value by 0.1450377.
How do I convert kilopascal to psi?
Multiply your kilopascal value by 0.1450377 to get the equivalent in psi. For example, 5 kilopascal = 5 × 0.1450377 = 0.72519 psi.
How do I convert psi to kilopascal?
Multiply your psi value by 6.8947573 to get the equivalent in kilopascal. Alternatively, divide by 0.1450377.
What is 10 kilopascal in psi?
10 kilopascal is equal to 1.45038 psi.
What is 100 kilopascal in psi?
100 kilopascal is equal to 14.50377 psi.