Samantha NicoleThe conversion of 4.2 bar equals approximately 60.9 psi.
Since 1 bar equals 14.5038 psi, multiplying 4.2 by this factor gives the psi value. This conversion relies on the fixed relationship between bar and psi, where bar measures pressure in the metric system and psi measures pounds per square inch in the imperial system. So, 4.2 bar times 14.5038 results in about 60.9 psi.
What is the pressure in psi when converting 4.2 bar?
Result in psi:
Conversion Formula
The conversion formula from bar to psi is: psi = bar × 14.5038. This works because 1 bar is defined as precisely 14.5038 pounds per square inch. By multiplying the number of bars by this factor, you convert the pressure measurement from the metric to the imperial system. For example, converting 4.2 bar involves calculating 4.2 × 14.5038, which yields 60.9 psi.
Conversion Example
- Convert 2 bar to psi:
- Step 1: Write the formula: psi = 2 × 14.5038
- Step 2: Multiply: 2 × 14.5038 = 29.0076
- Step 3: Result: 29.0076 psi
- Convert 10 bar to psi:
- Step 1: Write the formula: psi = 10 × 14.5038
- Step 2: Multiply: 10 × 14.5038 = 145.038
- Step 3: Result: 145.038 psi
- Convert 0.5 bar to psi:
- Step 1: Write the formula: psi = 0.5 × 14.5038
- Step 2: Multiply: 0.5 × 14.5038 = 7.2519
- Step 3: Result: 7.2519 psi
Conversion Chart
| Bar | Psi |
|---|---|
| -20.8 | -301.9 |
| -15.0 | -217.6 |
| -10.0 | -145.0 |
| -5.0 | -72.5 |
| 0 | 0 |
| 5.0 | 72.5 |
| 10.0 | 145.0 |
| 15.0 | 217.6 |
| 20.0 | 290.1 |
| 25.0 | 362.6 |
| 29.2 | 423.7 |
This chart helps to quickly find psi values for given bar measurements. Read across the row for the bar value and see the corresponding psi in the second column for quick reference.
Related Conversion Questions
- What is 4.2 bar in psi for car tire pressure?
- How do I convert 4.2 bar to pounds per square inch?
- Is 4.2 bar equal to approximately 60 psi?
- What pressure in psi corresponds to 4.2 bar in industrial settings?
- How many psi is 4.2 bar in bicycle tire measurements?
- Can I use the same conversion for 4.2 bar in hydraulic systems?
- What is the equivalent psi for 4.2 bar in scuba diving tanks?
Conversion Definitions
Bar
A bar is a metric unit of pressure equal to 100 kilopascals, used to measure force per unit area in various industrial and scientific applications, providing a convenient way to express pressure in the metric system.
Psi
Pounds per square inch (psi) is a pressure unit measuring force in pounds applied over one square inch, primarily used in the United States for tire pressure, gauges, and other pressure-related measurements.
Conversion FAQs
Why is 14.5038 used as the conversion factor between bar and psi?
This value is based on the exact definition of a bar as 100,000 pascals, and since 1 psi equals 6894.76 pascals, dividing 100,000 by 6894.76 gives approximately 14.5038. This fixed ratio allows straightforward conversion between the two units.
Can I convert psi back to bar using the same factor?
Yes, but you need to use the reciprocal of 14.5038, which is approximately 0.06895. So, to convert psi to bar, divide the psi value by 14.5038 or multiply by 0.06895. For example, 60 psi equals about 4.14 bar.
Are these conversions accurate for high-pressure applications?
The conversion factors are based on international standards and are highly accurate for most applications. However, in extreme high-pressure environments, calibration and measurement tools should be used to ensure precision.
