Bar to PSI Converter
One Bar equals 14.50377377 PSI (1 bar = 14.50377377 psi). Multiply a Bar value by 14.50377377 to get the equivalent in PSI. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
psi = bar × 14.50377377
Multiply the Bar value by 14.50377377 to get the equivalent value in PSI.
Example Conversions
1 Bar (bar)
14.50377377 PSI (psi)
5 Bar (bar)
72.51886887 PSI (psi)
10 Bar (bar)
145.0377377 PSI (psi)
25 Bar (bar)
362.5943443 PSI (psi)
100 Bar (bar)
1450.377377 PSI (psi)
Conversion Table
| Bar (bar) | PSI (psi) |
|---|---|
| 0.1 | 1.450377377 |
| 0.5 | 7.251886887 |
| 1 | 14.50377377 |
| 2 | 29.00754755 |
| 5 | 72.51886887 |
| 10 | 145.0377377 |
| 25 | 362.5943443 |
| 50 | 725.1886887 |
| 100 | 1450.377377 |
| 250 | 3625.943443 |
| 500 | 7251.886887 |
| 1000 | 14503.77377 |
How to Convert Manually
Use these steps to convert Bar values to PSI without the calculator.
- Write down the value in Bar (bar) that you want to convert.
- Multiply that value by 14.50377377.
- For example, 10 Bar × 14.50377377 = 145.0377377 PSI.
- Label the result as PSI (psi).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Bar and one PSI.
About Bar and PSI
The bar is exactly 100,000 pascals, close to one atmosphere. European tire pressures, scuba tanks, and espresso machines are rated in bar. The pound per square inch is about 6,894.757 pascals. US tire pressures, water systems, and industrial equipment are rated in psi. One Bar equals 14.50377377 PSI (1 bar = 14.50377377 psi). Bar to PSI conversion comes up most often in European tire pressures and in scuba diving tank pressure, typically when figures need restating for US tire pressure.
Precision and Rounding: Several pressure factors are exact by definition (1 atm = 101,325 Pa; 1 bar = 100,000 Pa) while others, like psi and mmHg, are derived and carry long decimals. Tire and weather readings tolerate whole-number rounding; calibration, medicine, and process engineering need the full factor before rounding.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15 Bar equals 217.5566066 PSI.
15 bar × 14.50377377 = 217.5566066 psi
FAQ
How do I convert Bar to PSI?
Multiply the Bar value by 14.50377377 to get the equivalent value in PSI.
What is the formula for Bar to PSI?
The formula is psi = bar × 14.50377377.
How many PSI are in 1 Bar?
1 Bar equals 14.50377377 PSI.
Can I convert PSI back to Bar?
Yes. 1 PSI equals 0.06894757293 Bar, and the related converter can reverse the calculation.
What are common names for Bar and PSI?
Bar is shown as bar and may also be searched as bars. PSI is shown as psi and may also be searched as pounds per square inch, lbf/in².
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