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Convert kilopascals (kPa) to pounds per square inch (PSI) with precision. Essential for tire pressure and automotive specifications.
PSI = kPa × 0.145038
kPa = PSI × 6.89476
| kPa | PSI |
|---|---|
| 50 | 7.252 |
| 100 | 14.504 |
| 150 | 21.756 |
| 200 | 29.008 |
| 220 | 31.908 |
| 240 | 34.809 |
| 250 | 36.259 |
| 300 | 43.511 |
| 350 | 50.763 |
| 400 | 58.015 |
| 500 | 72.519 |
| 600 | 87.023 |
| 700 | 101.527 |
A kilopascal (kPa) is a metric unit of pressure equal to 1,000 pascals. It is commonly used in many countries for tire pressure specifications, weather reports, and engineering applications. The pascal is the SI unit of pressure, named after French mathematician Blaise Pascal.
While PSI is predominantly used in the United States for tire pressure, most other countries use kPa as the standard unit. Canadian, European, Asian, and Australian vehicles typically display tire pressure recommendations in kPa. Understanding both units is essential for international travel and vehicle specifications.
In engineering and industrial applications, kPa is preferred because it integrates seamlessly with other SI units. This makes calculations more straightforward when dealing with force (newtons), area (square meters), and energy (joules). Many pressure sensors and gauges display readings in both kPa and PSI for convenience.
To convert kPa to PSI, multiply the kPa value by 0.145038. For example, 220 kPa × 0.145038 = 31.9 PSI. This is a common tire pressure for passenger vehicles. Most digital tire pressure gauges can display both units.
240 kPa equals approximately 34.8 PSI. This is within the typical range for passenger car tire pressure. Always refer to your vehicle's door jamb sticker or owner's manual for the manufacturer-recommended tire pressure.
Not exactly. 200 kPa equals 29.0 PSI, which is close to 30 PSI. For practical purposes, these values are often considered equivalent when inflating tires. However, for precise measurements in engineering applications, use the exact conversion factor of 0.145038.
Most countries use kPa because it is part of the International System of Units (SI), which is the global standard for scientific and technical measurements. The SI system provides consistency across all measurement types, making it easier for international collaboration and standardization.