Bars to Pounds per Square Inch (bar to psi) Converter
1 bar (bar) = 14.5038 pounds per square inch (psi). To convert bars to pounds per square inch, multiply by 14.5038: 2.2 bar × 14.5038 = 31.9083 psi.
Quick facts
- 1 bar = 14.5038 psi
- 1 psi = 0.0689476 bar
- Formula: psi = bar × 14.5038
- Quick estimate: multiply by about 15
How to convert bars to pounds per square inch
- Take the value in bars.
- Multiply it by 14.5038 (the number of pounds per square inch in one bar).
- Round the result to the precision you need.
Worked example (car tyre pressure): 2.2 bar × 14.5038 = 31.9083 psi.
To convert pounds per square inch back to bars, multiply by 0.0689476, or divide by 14.5038.
Source: NIST SP 811 (2008), Appendix B.
Bars to Pounds per Square Inch conversion table
| Bars [bar] | Pounds per Square Inch [psi] |
|---|---|
| 0.01 bar | 0.1450377377 psi |
| 0.1 bar | 1.4503773773 psi |
| 1 bar | 14.503773773 psi |
| 2 bar | 29.007547546 psi |
| 3 bar | 43.5113213191 psi |
| 5 bar | 72.5188688651 psi |
| 10 bar | 145.0377377302 psi |
| 20 bar | 290.0754754604 psi |
| 50 bar | 725.188688651 psi |
| 100 bar | 1450.3773773021 psi |
| 1000 bar | 14503.7737730209 psi |
bar to psi chart from 1 to 100
- 1 bar 14.5038 psi
- 2 bar 29.0075 psi
- 3 bar 43.5113 psi
- 4 bar 58.0151 psi
- 5 bar 72.5189 psi
- 6 bar 87.0226 psi
- 7 bar 101.526 psi
- 8 bar 116.03 psi
- 9 bar 130.534 psi
- 10 bar 145.038 psi
- 11 bar 159.542 psi
- 12 bar 174.045 psi
- 13 bar 188.549 psi
- 14 bar 203.053 psi
- 15 bar 217.557 psi
- 16 bar 232.06 psi
- 17 bar 246.564 psi
- 18 bar 261.068 psi
- 19 bar 275.572 psi
- 20 bar 290.075 psi
- 25 bar 362.594 psi
- 30 bar 435.113 psi
- 35 bar 507.632 psi
- 40 bar 580.151 psi
- 45 bar 652.67 psi
- 50 bar 725.189 psi
- 55 bar 797.708 psi
- 60 bar 870.226 psi
- 65 bar 942.745 psi
- 70 bar 1015.26 psi
- 75 bar 1087.78 psi
- 80 bar 1160.3 psi
- 85 bar 1232.82 psi
- 90 bar 1305.34 psi
- 95 bar 1377.86 psi
- 100 bar 1450.38 psi
Pounds per Square Inch to Bars conversion table
| Pounds per Square Inch [psi] | Bars [bar] |
|---|---|
| 0.01 psi | 0.0006894757 bar |
| 0.1 psi | 0.0068947573 bar |
| 1 psi | 0.0689475729 bar |
| 2 psi | 0.1378951459 bar |
| 3 psi | 0.2068427188 bar |
| 5 psi | 0.3447378647 bar |
| 10 psi | 0.6894757293 bar |
| 20 psi | 1.3789514586 bar |
| 50 psi | 3.4473786466 bar |
| 100 psi | 6.8947572932 bar |
| 1000 psi | 68.9475729317 bar |
Bars vs Pounds per Square Inch
| Bar | Pounds per Square Inch | |
|---|---|---|
| Symbol | bar | psi |
| Equals | 1 bar = 14.5038 psi | 1 psi = 0.0689476 bar |
What is a bar?
Approximately equal to atmospheric pressure at sea level. Used in meteorology and for tire and hydraulic pressure.
What is a pounds per square inch?
Force in pounds applied over one square inch. Used in the US for tire pressure and hydraulic systems.
Frequently asked questions
How many pounds per square inch are in a bar?
There are 14.5038 pounds per square inch in 1 bar (1 bar = 14.503773773 psi).
How many bars are in a pounds per square inch?
There are 0.0689476 bars in 1 pounds per square inch (1 psi = 0.0689475729 bar).
How do I convert bars to pounds per square inch?
Multiply the number of bars by 14.5038. For example, 10 bar × 14.5038 = 145.038 psi. To convert back, multiply by 0.0689476.
What is 10 bar in pounds per square inch?
10 bar = 145.038 psi.
What is 100 bar in pounds per square inch?
100 bar = 1,450.38 psi.
Is the conversion exact?
Yes. The factor comes from the official definitions of both units (NIST SP 811 (2008), Appendix B). Results are shown to up to 10 decimal places; round them to suit your purpose.
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