The conversion of 1.55 bar equals approximately 22.49 psi.
Since 1 bar is equivalent to 14.5038 psi, multiplying 1.55 by this factor provides the value in psi. This calculation directly converts the pressure measurement from bar to pounds per square inch, a common unit in the US customary system.
Conversion Tool
Result in psi:
Conversion Formula
The formula to convert bar to psi is multiplying the number of bar by 14.5038 since 1 bar equals 14.5038 psi. This works because pressure units are related through a fixed conversion factor derived from the definitions of the units. For example, converting 2 bar:
- 2 bar × 14.5038 = 29.0076 psi
- This means 2 bar of pressure is equivalent to 29.0076 pounds per square inch.
Conversion Example
- Convert 3.2 bar to psi:
- Step 1: Write the conversion formula: psi = bar × 14.5038
- Step 2: Substitute the value: 3.2 × 14.5038
- Step 3: Multiply: 3.2 × 14.5038 = 46.4112 psi
- Convert 0.75 bar to psi:
- Step 1: psi = 0.75 × 14.5038
- Step 2: Multiply: 0.75 × 14.5038 = 10.8779 psi
- Convert 5 bar to psi:
- Step 1: psi = 5 × 14.5038
- Step 2: Multiply: 5 × 14.5038 = 72.519 psi
Conversion Chart
| Bar | Psi |
|---|---|
| -23.4 | -339.84 |
| -15.0 | -217.56 |
| -10.0 | -145.04 |
| -5.0 | -72.52 |
| 0.0 | 0.00 |
| 5.0 | 72.52 |
| 10.0 | 145.04 |
| 15.0 | 217.56 |
| 20.0 | 290.08 |
| 26.6 | 386.25 |
Use this chart to quickly find approximate psi values for given bar measurements. Simply locate the bar value in the first column, then read across to see the corresponding psi in the second column.
Related Conversion Questions
- How many psi is 1.55 bar equal to in different contexts?
- What is the pressure in psi for 1.55 bar in tire inflation?
- Can I convert 1.55 bar to psi for an industrial pressure gauge?
- What is the equivalent of 1.55 bar in pounds per square inch?
- How do I accurately convert small pressure values like 1.55 bar to psi?
- Is 1.55 bar a high or low pressure in psi units?
- What is the conversion factor from bar to psi for other measurements?
Conversion Definitions
Bar
The bar is a metric unit of pressure, roughly equal to 100,000 pascals. It measures force per unit area and is commonly used in meteorology, engineering, and industrial applications to quantify pressure levels.
Psi
Pounds per square inch (psi) measures pressure as force in pounds applied over one square inch. It is mainly used in the United States for tire pressures, hydraulics, and other pressure-related measurements in various industries.
Conversion FAQs
Why is 1 bar equal to 14.5038 psi?
This equivalence is based on the definition of the pascal (unit of pressure), where 1 bar equals 100,000 pascals, and 1 psi equals 6,894.76 pascals. Dividing 100,000 by 6,894.76 gives approximately 14.5038, establishing the conversion factor.
Can I convert pressure units using simple multiplication?
Yes, for units with fixed conversion factors like bar to psi, multiplying the number of bar by 14.5038 directly gives the pressure in psi. However, always ensure the units are consistent and the conversion factor is accurate for precise calculations.
Is the conversion factor the same for all pressure ranges?
Yes, because the conversion factor is a constant derived from the definitions of the units themselves. It applies uniformly regardless of the pressure value being converted, making calculations straightforward.
What are common uses of psi and bar in real-world applications?
Psi is typically used for tire pressure, hydraulic systems, and certain industrial measurements in the US. Bar is common in Europe and used for weather reporting, pressure vessels, and scientific measurements to express moderate to high pressures.