Pressure converter
PSI to Bar
If you need to know how many Bar one PSI contains, the answer is 0.06894757. The conversion is linear, so 10 psi is 0.68947573 bar and 100 psi is 6.894757 bar. Use the converter for any other value.
Formula 1 psi = 0.06894757 bar
Need the other direction? Bar to PSI.
How to convert PSI to Bar
One pound per square inch is about 6,894.76 pascals. One bar is exactly 100,000 pascals, slightly below standard atmosphere.
To convert PSI to Bar, multiply the value in psi by 0.06894757. For example, 10 psi × 0.06894757 = 0.68947573 bar. This works because the ratio between the two units is constant for every value in pressure.
Worked examples
| psi | bar |
|---|---|
| 1 psi | 0.06894757 bar |
| 2.5 psi | 0.17236893 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 |
Reverse conversion
| bar | psi |
|---|---|
| 1 bar | 14.503774 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 |
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 psi is 68.947573 bar.
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.
psi to bar 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.
| PSI (psi) | Bar (bar) |
|---|---|
| 1 psi | 0.06894757 bar |
| 2 psi | 0.13789515 bar |
| 3 psi | 0.20684272 bar |
| 4 psi | 0.27579029 bar |
| 5 psi | 0.34473786 bar |
| 6 psi | 0.41368544 bar |
| 7 psi | 0.48263301 bar |
| 8 psi | 0.55158058 bar |
| 9 psi | 0.62052816 bar |
| 10 psi | 0.68947573 bar |
| 11 psi | 0.7584233 bar |
| 12 psi | 0.82737088 bar |
| 13 psi | 0.89631845 bar |
| 14 psi | 0.96526602 bar |
| 15 psi | 1.034214 bar |
| 16 psi | 1.103161 bar |
| 17 psi | 1.172109 bar |
| 18 psi | 1.241056 bar |
| 19 psi | 1.310004 bar |
| 20 psi | 1.378951 bar |
| 21 psi | 1.447899 bar |
| 22 psi | 1.516847 bar |
| 23 psi | 1.585794 bar |
| 24 psi | 1.654742 bar |
| 25 psi | 1.723689 bar |
| 26 psi | 1.792637 bar |
| 27 psi | 1.861584 bar |
| 28 psi | 1.930532 bar |
| 29 psi | 1.99948 bar |
| 30 psi | 2.068427 bar |
| 31 psi | 2.137375 bar |
| 32 psi | 2.206322 bar |
| 33 psi | 2.27527 bar |
| 34 psi | 2.344217 bar |
| 35 psi | 2.413165 bar |
| 36 psi | 2.482113 bar |
| 37 psi | 2.55106 bar |
| 38 psi | 2.620008 bar |
| 39 psi | 2.688955 bar |
| 40 psi | 2.757903 bar |
| 41 psi | 2.82685 bar |
| 42 psi | 2.895798 bar |
| 43 psi | 2.964746 bar |
| 44 psi | 3.033693 bar |
| 45 psi | 3.102641 bar |
| 46 psi | 3.171588 bar |
| 47 psi | 3.240536 bar |
| 48 psi | 3.309484 bar |
| 49 psi | 3.378431 bar |
| 50 psi | 3.447379 bar |
| 60 psi | 4.136854 bar |
| 70 psi | 4.82633 bar |
| 80 psi | 5.515806 bar |
| 90 psi | 6.205282 bar |
| 100 psi | 6.894757 bar |
Frequently asked questions
How many Bar are in 1 PSI?
1 psi equals 0.06894757 bar.
How do I convert PSI to Bar?
Multiply the psi value by 0.06894757. Example: 25 psi = 1.723689 bar.
What is 2.5 psi in bar?
2.5 psi = 0.17236893 bar.
Is the psi to bar 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.