Convert bar to psi instantly. Enter a value below, or use the formula and reference table further down the page.
In practice
Bar to PSI multiplies by 14.5038, since one bar is 100,000 pascals — close to atmospheric pressure at sea level. It is the conversion for tyres (a car tyre at 2.2 bar is about 32 psi), bike pumps, pressure washers and espresso machines, where the gauge may be in one unit and the specification in another. Most car tyre labels in the US are in psi and in Europe in bar, so a mismatch of units can lead to dangerously over- or under-inflated tyres. Always check the number on the sidewall or door jamb placard.
How to convert bar to psi
Multiply the value by 14.50377377.
psi = bar × 14.50377377Example: 10 bar = 145.0377 psi.
Bar to PSI conversion table
| Bar (bar) | PSI (psi) |
|---|---|
| 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 |
| 10 bar | 145.0377 psi |
| 15 bar | 217.5566 psi |
| 20 bar | 290.0755 psi |
| 25 bar | 362.5943 psi |
| 50 bar | 725.1887 psi |
| 100 bar | 1450.3774 psi |
Frequently asked questions
How many psi is 1 bar?
1 bar equals 14.5038 psi.
What is the formula to convert bar to psi?
To convert bar to psi, multiply the value by 14.50377377. The full formula is: psi = bar × 14.50377377.
How do I convert psi back to bar?
Use the same calculator above and type your value into the psi field instead — it converts in both directions. Or use the reverse formula: bar = psi ÷ 14.50377377.
Is the bar to psi conversion exact?
The conversion factor used here (14.50377377) is the standard internationally defined value. Results on this page are rounded to four decimal places for readability.