How to use Bar to PSI
Type a pressure in bar and the psi value appears straight away. Use the table below the examples for common values.
Typical pressures in bar and psi
Car tyres usually run between about 2.2 and 2.5 bar, which is roughly 32 to 36 psi. Road bike tyres sit much higher, around 5.5 to 7 bar or 80 to 100 psi. Normal air pressure at sea level is about 1.013 bar, or 14.7 psi. A home espresso machine brews at around 9 bar, close to 130 psi.
Gauge pressure versus absolute pressure
Most tyre and pump gauges show gauge pressure, which is the pressure above the surrounding air. Absolute pressure adds the atmosphere on top. You may see psig and psia, or barg and bara, to make the difference clear. The conversion factor is the same either way, so 2 barg is about 29 psig.
The formula
psi = bar × 14.5037738
Examples
- 1 bar to psi
14.50377377 psi
- 10 bar to psi
145.03773773 psi
- 250 bar to psi
3,625.94344326 psi
Bar to psi conversion table
| Bar | psi |
|---|---|
| 1 | 14.5038 psi |
| 2 | 29.0075 psi |
| 3 | 43.5113 psi |
| 4 | 58.0151 psi |
| 5 | 72.5189 psi |
| 6 | 87.0226 psi |
| 7 | 101.5264 psi |
| 8 | 116.0302 psi |
| 9 | 130.534 psi |
| 10 | 145.0377 psi |
| 15 | 217.5566 psi |
| 20 | 290.0755 psi |
| 25 | 362.5943 psi |
| 30 | 435.1132 psi |
| 40 | 580.151 psi |
| 50 | 725.1887 psi |
| 75 | 1,087.783 psi |
| 100 | 1,450.3774 psi |
| 250 | 3,625.9434 psi |
| 500 | 7,251.8869 psi |
| 1,000 | 14,503.7738 psi |
Limitations and assumptions
Uses the stated standard unit definitions. Check the input unit and displayed precision before relying on the result.
Frequently asked questions
How many psi are in one bar?
One bar equals 14.50377377 psi. The formula is psi = bar × 14.5037738.
How do I convert bar to psi?
Use psi = bar × 14.5037738. For example, 10 bar gives 145.03773773 psi. Enter your own value above and the converter does the arithmetic for you.
How do I convert psi back to bar?
Use the PSI to Bar converter, or invert the factor by dividing instead of multiplying.
Is this conversion exact?
Pressure units come from different systems: 1 bar = 100,000 Pa, 1 atm = 101,325 Pa and 1 psi is about 6,894.76 Pa.