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4 kpa equals approximately 0.0058 psi.
To convert kilopascal (kpa) to pounds per square inch (psi), you multiply the kpa value by 0.145038. This because 1 kpa equals about 0.145038 psi, a standard conversion factor based on the relationship between these two pressure units. Therefore, multiplying gives you the psi equivalent.
Understanding the Conversion
The conversion from kpa to psi involves multiplying the pressure value in kpa by 0.145038. This factor comes from the fact that 1 pascal (pa) equals 0.000145038 psi, and since 1 kpa equals 1000 pa, the direct conversion factor is 0.145038. For example, converting 4 kpa: 4 x 0.145038 = 0.580152 psi, rounded to 0.0058 psi.
Conversion Tool
Result in psi:
Conversion Formula
The formula to convert kpa to psi is: psi = kpa × 0.145038. This works because 1 kilopascal equals 0.145038 pounds per square inch. By multiplying the kpa value with this factor, we get the psi pressure. For example, for 4 kpa: 4 × 0.145038 = 0.580152 psi, rounded as needed.
Conversion Example
- Convert 10 kpa to psi:
- Multiply 10 by 0.145038.
- 10 × 0.145038 = 1.45038 psi.
- Result: 10 kpa equals approximately 1.45 psi.
- Convert 15 kpa to psi:
- 15 × 0.145038 = 2.17557 psi.
- The pressure in psi is about 2.18.
- Convert 20 kpa to psi:
- 20 × 0.145038 = 2.90076 psi.
- Approximately 2.90 psi.
- Convert 5 kpa to psi:
- 5 × 0.145038 = 0.72519 psi.
- Equals roughly 0.73 psi.
- Convert 25 kpa to psi:
- 25 × 0.145038 = 3.62595 psi.
- Roughly 3.63 psi.
Conversion Chart
| Kpa | Psi |
|---|---|
| -21.0 | -3.049 |
| -20.0 | -2.900 |
| -19.0 | -2.751 |
| -18.0 | -2.602 |
| -17.0 | -2.453 |
| -16.0 | -2.304 |
| -15.0 | -2.155 |
| -14.0 | -2.006 |
| -13.0 | -1.857 |
| -12.0 | -1.708 |
| -11.0 | -1.559 |
| -10.0 | -1.410 |
| -9.0 | -1.261 |
| -8.0 | -1.112 |
| -7.0 | -0.963 |
| -6.0 | -0.814 |
| -5.0 | -0.665 |
| -4.0 | -0.516 |
| -3.0 | -0.367 |
| -2.0 | -0.218 |
| -1.0 | -0.069 |
| 0.0 | 0.000 |
| 1.0 | 0.145 |
| 2.0 | 0.290 |
| 3.0 | 0.435 |
| 4.0 | 0.580 |
| 5.0 | 0.725 |
| 6.0 | 0.870 |
| 7.0 | 1.015 |
| 8.0 | 1.160 |
| 9.0 | 1.305 |
| 10.0 | 1.450 | … |
Use this chart to quickly see the psi equivalent for various kpa values. Values are rounded to three decimal places for clarity.
Related Conversion Questions
- How many psi are in 4 kilopascals?
- What is the psi value of 4 kpa pressure?
- How do I convert 4 kpa to pounds per square inch?
- Is 4 kpa equal to about 0.0058 psi?
- What is the pressure in psi for 4 kpa?
- Can I convert 4 kilopascals into psi easily?
- What is 4 kpa in terms of psi measurement?
Conversion Definitions
kpa
Kilopascal (kpa) is a metric pressure unit equal to 1000 pascals, measuring force per unit area, used in engineering and meteorology for pressure and stress calculations.
psi
Pounds per square inch (psi) is an imperial pressure unit representing force in pounds applied over an area of one square inch, common in automotive and industrial pressure measurements.
Conversion FAQs
Why is kpa used instead of pascals?
Kpa is preferred because it simplifies large values of pascals, making the numbers easier to read and interpret, especially in fields like engineering where pressures often reach thousands of pascals.
Can I convert psi back to kpa?
Yes, to convert psi to kpa, multiply the psi value by 6.89476, the inverse of 0.145038, ensuring pressure measurements can be correctly translated between units.
Is the conversion factor between kpa and psi exact?
The factor 0.145038 is an approximation based on the precise definitions of pascal and psi, but it is accurate enough for most practical purposes. Slight variations can occur depending on measurement standards.
What tools are best for converting kpa to psi?
Calculators, online conversion tools, and digital measurement devices equipped with unit conversion features are all reliable options for converting pressures from kpa to psi quickly and accurately.
