Result: 30 kpa equals approximately 4.36 psi.
To convert kilopascals (kpa) to pounds per square inch (psi), multiply the kpa value by 0.145038. This conversion works because 1 kpa equals 0.145038 psi, based on the relationship between the metric and imperial pressure units. So, for 30 kpa, multiplying by 0.145038 gives the psi value.
What is the conversion of 30 kpa to psi?
Result in psi:
Conversion Formula
The conversion from kpa to psi uses the formula: psi = kpa × 0.145038. This works because 1 kilopascal equals 0.145038 psi. The factor 0.145038 is derived from the equivalence of 1 pascal (Pa) with 1 N/m² and the conversion between N/m² and psi.
For example, converting 30 kpa:
- Multiply 30 by 0.145038.
- 30 × 0.145038 = 4.35114 psi.
- Rounding gives approximately 4.36 psi.
Conversion Example
- Convert 50 kpa to psi:
- Multiply 50 by 0.145038.
- 50 × 0.145038 = 7.2519 psi.
- Answer: about 7.25 psi.
- Convert 10 kpa to psi:
- Multiply 10 by 0.145038.
- 10 × 0.145038 = 1.45038 psi.
- Answer: roughly 1.45 psi.
- Convert 100 kpa to psi:
- Multiply 100 by 0.145038.
- 100 × 0.145038 = 14.5038 psi.
- Answer: approximately 14.50 psi.
- Convert 25 kpa to psi:
- Multiply 25 by 0.145038.
- 25 × 0.145038 = 3.62595 psi.
- Answer: about 3.63 psi.
Conversion Chart
| kpa | psi |
|---|---|
| 5.0 | 0.7252 |
| 10.0 | 1.4504 |
| 15.0 | 2.1756 |
| 20.0 | 2.9008 |
| 25.0 | 3.6260 |
| 30.0 | 4.3511 |
| 35.0 | 5.0763 |
| 40.0 | 5.8015 |
| 45.0 | 6.5267 |
| 50.0 | 7.2519 |
| 55.0 | 7.9771 |
Use this chart to quickly find the psi equivalent for given kpa values. Read the table row by row, matching your kpa to its corresponding psi.
Related Conversion Questions
- What is 30 kpa in psi for tire pressure measurement?
- How do I convert 30 kpa to psi for hydraulic systems?
- Is 30 kpa a safe pressure for a bicycle tire in psi?
- How many psi is 30 kilopascals in pressure gauges?
- What is the equivalent of 30 kpa in psi for weather barometers?
- Can I use the same conversion for 30 kpa in different engineering contexts?
- What does 30 kpa mean in terms of air pressure in psi?
Conversion Definitions
kpa
Kilopascal (kpa) is a metric unit measuring pressure, where 1 kpa equals 1,000 pascals, representing force applied over an area. It is used in engineering, weather, and physics to quantify pressure exerted by gases or liquids in various settings.
psi
Pounds per square inch (psi) is an imperial pressure unit measuring force per area, commonly used in the US for tire pressure, plumbing, and hydraulics. It indicates how many pounds of force are applied over one square inch of surface.
Conversion FAQs
How accurate is converting 30 kpa to psi using the factor 0.145038?
The conversion factor 0.145038 is precise for converting kilopascals to psi, as it is based on exact definitions of pascals and pounds per square inch. Minor rounding errors may occur in decimal places, but for practical purposes, it is highly accurate.
Can I convert any pressure from kpa to psi with the same factor?
Yes, the factor 0.145038 applies universally for converting between kpa and psi. Just multiply the kpa value by this number, regardless of the magnitude, to get the equivalent psi value.
Why is conversion necessary between kpa and psi?
Conversion is needed because different regions and industries prefer specific units. Metric systems use kpa, while the imperial system uses psi. Converting allows for accurate interpretation, comparison, and usage of pressure data across systems.
Is 30 kpa a high or low pressure reading?
30 kpa is considered quite low in many applications, like tire pressures or hydraulic systems. For example, typical car tires are around 200-250 kpa (30-36 psi), so 30 kpa indicates a very low or vacuum-like pressure.