4 kpa is approximately equal to 0.0058 psi.
To convert kilopascals (kpa) to pounds per square inch (psi), multiply the kpa value by 0.1450377 because 1 kpa equals about 0.1450377 psi. This conversion factor is based on the relationship between the SI unit of pressure (kpa) and the imperial unit (psi).
Conversion Result
Result in psi:
Conversion Formula
The conversion formula from kpa to psi is: psi = kpa × 0.1450377. This works because 1 kilopascal equals 0.1450377 pounds per square inch, which is derived from the relationship between SI units and imperial units of pressure. For example, converting 4 kpa involves multiplying 4 by 0.1450377, resulting in approximately 0.58015 psi.
Conversion Example
- Suppose you want to convert 10 kpa to psi:
- Step 1: Write down the value: 10 kpa.
- Step 2: Multiply 10 by 0.1450377: 10 × 0.1450377 = 1.450377.
- Step 3: The result is approximately 1.4504 psi.
- Similarly, for 20 kpa:
- Step 1: 20 kpa.
- Step 2: 20 × 0.1450377 = 2.900754.
- Step 3: Result is about 2.9008 psi.
- For 5 kpa:
- Step 1: 5 kpa.
- Step 2: 5 × 0.1450377 = 0.7251885.
- Step 3: Approximate result is 0.7252 psi.
Conversion Chart
| Kpa | Psi |
|---|---|
| -21.0 | -3.046 |
| -20.0 | -2.9008 |
| -19.0 | -2.7556 |
| -18.0 | -2.6104 |
| -17.0 | -2.4652 |
| -16.0 | -2.32 |
| -15.0 | -2.1748 |
| -14.0 | -2.0296 |
| -13.0 | -1.8844 |
| -12.0 | -1.7392 |
| -11.0 | -1.594 |
| -10.0 | -1.4488 |
| -9.0 | -1.3036 |
| -8.0 | -1.1584 |
| -7.0 | -1.0132 |
| -6.0 | -0.868 |
| -5.0 | -0.7228 |
| -4.0 | -0.5776 |
| -3.0 | -0.4324 |
| -2.0 | -0.2872 |
| -1.0 | -0.142 |
| 0.0 | 0.0 |
| 1.0 | 0.145 |
| 2.0 | 0.290 |
| 3.0 | 0.435 |
| 4.0 | 0.580 |
| 5.0 | 0.725 |
| 6.0 | 0.87 |
| 7.0 | 1.015 |
| 8.0 | 1.16 |
| 9.0 | 1.305 |
| 10.0 | 1.45 | …and so on for higher/lower values. |
Use this chart to quickly estimate psi values for kpa inputs within this range, noting that each 1 kpa equals approximately 0.145 psi.
Related Conversion Questions
- How many psi are in 4 kilopascals?
- What is the psi equivalent of 4 kpa pressure?
- Can I convert 4 kpa to psi using a calculator?
- What is the formula to change kpa to psi for 4 units?
- How do I convert 4 kpa to pounds per square inch?
- Is 4 kpa the same as 0.0058 psi?
- What is the pressure in psi if I have 4 kilopascals?
Conversion Definitions
kpa
Kilopascal (kpa) is a metric unit of pressure equal to 1,000 pascals, where a pascal measures force per unit area, specifically one newton per square meter. It is used globally to quantify pressure, stress, and load in engineering and scientific contexts.
psi
Pounds per square inch (psi) is an imperial pressure measurement indicating how many pounds of force are applied to one square inch of area. It is common in the US for tire pressure, hydraulics, and other pressure-related applications.
Conversion FAQs
How accurate is the conversion from kpa to psi for small values like 4 kpa?
The conversion using the factor 0.1450377 provides high precision for small and large values, so for 4 kpa, the result is accurate to four decimal places, approximately 0.5802 psi, making it reliable for most practical purposes.
Can I convert any pressure value from kpa to psi using this formula?
Yes, the formula psi = kpa × 0.1450377 works for any value of kpa, whether positive or negative, providing a consistent method to convert metric pressure to imperial units across a broad range of values.
What is the difference between kpa and psi in terms of measurement system?
Kpa is part of the metric system, measuring pressure in pascals, which are based on SI units, while psi belongs to the imperial system, measuring force per unit area in pounds per square inch. They are used in different regions and industries but serve similar purposes.
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