The pressure of 90 kilopascals equals approximately 13.05 psi.
This conversion is based on the fact that 1 kilopascal (kpa) equals about 0.145038 psi. So, multiplying 90 by 0.145038 gives the equivalent pressure in psi, providing a quick way to switch between these units.
Understanding the Conversion from kpa to psi
To convert from kilopascals to pounds per square inch, you multiply the kpa value by the conversion factor 0.145038. This factor is derived from the relationship between these pressure units, where 1 kpa equals 0.145038 psi. This works because both units measure pressure but in different measurement systems, metric and imperial. For example, converting 90 kpa to psi involves multiplying 90 by 0.145038, resulting in approximately 13.05 psi.
Conversion Tool
Result in psi:
Conversion Formula
The formula to convert kpa to psi is: psi = kpa × 0.145038. This works because the conversion factor 0.145038 represents how many psi are equivalent to one kilopascal. Multiplying the kpa value by this factor transforms the metric pressure into imperial units. For example, converting 50 kpa involves calculating 50 × 0.145038 = 7.2519 psi.
Conversion Example
- Convert 120 kpa to psi:
- Multiply 120 by 0.145038
- 120 × 0.145038 = 17.40456
- Result: approximately 17.4046 psi
- Convert 75 kpa to psi:
- Multiply 75 by 0.145038
- 75 × 0.145038 = 10.87785
- Result: approximately 10.8779 psi
- Convert 200 kpa to psi:
- Multiply 200 by 0.145038
- 200 × 0.145038 = 29.0076
- Result: approximately 29.0076 psi
- Convert 30 kpa to psi:
- Multiply 30 by 0.145038
- 30 × 0.145038 = 4.35114
- Result: approximately 4.3511 psi
Conversion Chart
| kpa | psi |
|---|---|
| 65.0 | 9.43 |
| 70.0 | 10.17 |
| 75.0 | 10.88 |
| 80.0 | 11.61 |
| 85.0 | 12.33 |
| 90.0 | 13.05 |
| 95.0 | 13.78 |
| 100.0 | 14.51 |
| 105.0 | 15.23 |
| 110.0 | 15.95 |
| 115.0 | 16.68 |
This chart shows values of pressure in kpa and their equivalents in psi. Use it to quickly find the psi value for any pressure within this range by matching the kpa value.
Related Conversion Questions
- What is the psi equivalent for 90 kpa in a tire pressure measurement?
- How many psi are in 90 kilopascals for a hydraulic system?
- Can I convert 90 kpa to psi for a weather-related pressure reading?
- What is the pressure in psi if the pressure gauge shows 90 kpa?
- Is 90 kpa a high or low pressure in terms of psi measurement?
- How do I convert other pressure units from kpa to psi using a calculator?
- What is the conversion factor for kpa to psi in different applications?
Conversion Definitions
kpa
Kilopascal (kpa) is a metric unit measuring pressure, where 1 kpa equals 1,000 pascals. It is used in various fields like engineering, meteorology, and physics to quantify force exerted per unit area in the metric system.
psi
Pounds per square inch (psi) is an imperial pressure measurement unit, indicating how many pounds of force are applied over one square inch area. It is common in tire pressure, hydraulics, and other engineering applications in the United States.
Conversion FAQs
Why is the conversion from kpa to psi sometimes necessary in engineering?
Many engineering systems use metric units like kpa, but industry standards or equipment specifications often prefer psi, especially in the United States. Converting allows for accurate interpretation and compatibility between different measurement systems.
What are the limitations of converting pressure units like kpa to psi?
While mathematical conversion is straightforward, differences in measurement precision, calibration, and context can affect the accuracy. It’s vital to use precise conversion factors and consider the measurement’s purpose, especially in safety-critical applications.
How does temperature affect pressure conversions between kpa and psi?
Temperature can influence pressure readings, as gases expand or contract with temperature changes. The conversion assumes constant temperature, so in real-world applications, temperature variations may cause slight discrepancies, requiring compensation.