Pressure converter
Bar to PSI
Converting Bar to PSI is a single multiplication when you know the factor. One bar equals 14.503774 psi, so multiply the value in bar by 14.503774. The calculator below works in both directions and accepts decimals.
Formula 1 bar = 14.503774 psi
Need the other direction? PSI to Bar.
How to convert Bar to PSI
One bar is exactly 100,000 pascals, slightly below standard atmosphere. One pound per square inch is about 6,894.76 pascals.
To convert Bar to PSI, multiply the value in bar by 14.503774. For example, 10 bar × 14.503774 = 145.037738 psi. This works because the ratio between the two units is constant for every value in pressure.
Worked examples
| bar | psi |
|---|---|
| 1 bar | 14.503774 psi |
| 2.5 bar | 36.259434 psi |
| 5 bar | 72.518869 psi |
| 10 bar | 145.037738 psi |
| 25 bar | 362.594344 psi |
| 50 bar | 725.188689 psi |
| 100 bar | 1,450.38 psi |
Reverse conversion
| psi | bar |
|---|---|
| 1 psi | 0.06894757 bar |
| 5 psi | 0.34473786 bar |
| 10 psi | 0.68947573 bar |
| 25 psi | 1.723689 bar |
| 50 psi | 3.447379 bar |
| 100 psi | 6.894757 bar |
When this conversion is useful
This is the calculation you need when you are inflating a tyre, reading a barometer or checking an engineering spec. Because the factor is fixed, you can use the same number for a single measurement or for a batch: 1,000 bar is 14,503.77 psi.
Is the conversion exact?
Yes for practical use: the factors come from international definitions, with rounding applied only for display.
Reference: BIPM SI Brochure and NIST SP 811. Last reviewed: 2026-11-01.
bar to psi conversion chart
The chart lists the most requested values. For a value that is not here, use the converter at the top of the page.
| Bar (bar) | PSI (psi) |
|---|---|
| 1 bar | 14.503774 psi |
| 2 bar | 29.007548 psi |
| 3 bar | 43.511321 psi |
| 4 bar | 58.015095 psi |
| 5 bar | 72.518869 psi |
| 6 bar | 87.022643 psi |
| 7 bar | 101.526416 psi |
| 8 bar | 116.03019 psi |
| 9 bar | 130.533964 psi |
| 10 bar | 145.037738 psi |
| 11 bar | 159.541512 psi |
| 12 bar | 174.045285 psi |
| 13 bar | 188.549059 psi |
| 14 bar | 203.052833 psi |
| 15 bar | 217.556607 psi |
| 16 bar | 232.06038 psi |
| 17 bar | 246.564154 psi |
| 18 bar | 261.067928 psi |
| 19 bar | 275.571702 psi |
| 20 bar | 290.075475 psi |
| 21 bar | 304.579249 psi |
| 22 bar | 319.083023 psi |
| 23 bar | 333.586797 psi |
| 24 bar | 348.090571 psi |
| 25 bar | 362.594344 psi |
| 26 bar | 377.098118 psi |
| 27 bar | 391.601892 psi |
| 28 bar | 406.105666 psi |
| 29 bar | 420.609439 psi |
| 30 bar | 435.113213 psi |
| 31 bar | 449.616987 psi |
| 32 bar | 464.120761 psi |
| 33 bar | 478.624535 psi |
| 34 bar | 493.128308 psi |
| 35 bar | 507.632082 psi |
| 36 bar | 522.135856 psi |
| 37 bar | 536.63963 psi |
| 38 bar | 551.143403 psi |
| 39 bar | 565.647177 psi |
| 40 bar | 580.150951 psi |
| 41 bar | 594.654725 psi |
| 42 bar | 609.158498 psi |
| 43 bar | 623.662272 psi |
| 44 bar | 638.166046 psi |
| 45 bar | 652.66982 psi |
| 46 bar | 667.173594 psi |
| 47 bar | 681.677367 psi |
| 48 bar | 696.181141 psi |
| 49 bar | 710.684915 psi |
| 50 bar | 725.188689 psi |
| 60 bar | 870.226426 psi |
| 70 bar | 1,015.26 psi |
| 80 bar | 1,160.3 psi |
| 90 bar | 1,305.34 psi |
| 100 bar | 1,450.38 psi |
Frequently asked questions
How many PSI are in 1 Bar?
1 bar equals 14.503774 psi.
How do I convert Bar to PSI?
Multiply the bar value by 14.503774. Example: 25 bar = 362.594344 psi.
What is 2.5 bar in psi?
2.5 bar = 36.259434 psi.
Is the bar to psi conversion exact?
Yes for practical use: the factors come from international definitions, with rounding applied only for display.
Does the calculator work offline?
Yes. The conversion runs in your browser with JavaScript, so it works after the page has loaded, even without a connection.