PSI to Bar Converter
One PSI equals 0.06894757293 Bar (1 psi = 0.06894757293 bar). Multiply a PSI value by 0.06894757293 to get the equivalent in Bar. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
bar = psi × 0.06894757293
Multiply the PSI value by 0.06894757293 to get the equivalent value in Bar.
Example Conversions
1 PSI (psi)
0.06894757293 Bar (bar)
5 PSI (psi)
0.3447378647 Bar (bar)
10 PSI (psi)
0.6894757293 Bar (bar)
25 PSI (psi)
1.723689323 Bar (bar)
100 PSI (psi)
6.894757293 Bar (bar)
Conversion Table
| PSI (psi) | Bar (bar) |
|---|---|
| 0.1 | 0.006894757293 |
| 0.5 | 0.03447378647 |
| 1 | 0.06894757293 |
| 2 | 0.1378951459 |
| 5 | 0.3447378647 |
| 10 | 0.6894757293 |
| 25 | 1.723689323 |
| 50 | 3.447378647 |
| 100 | 6.894757293 |
| 250 | 17.23689323 |
| 500 | 34.47378647 |
| 1000 | 68.94757293 |
How to Convert Manually
Use these steps to convert PSI values to Bar without the calculator.
- Write down the value in PSI (psi) that you want to convert.
- Multiply that value by 0.06894757293.
- For example, 10 PSI × 0.06894757293 = 0.6894757293 Bar.
- Label the result as Bar (bar).
Relative Size Comparison
This chart shows the visual difference in size between exactly one PSI and one Bar.
About PSI and Bar
The pound per square inch is about 6,894.757 pascals. US tire pressures, water systems, and industrial equipment are rated in psi. The bar is exactly 100,000 pascals, close to one atmosphere. European tire pressures, scuba tanks, and espresso machines are rated in bar. One PSI equals 0.06894757293 Bar (1 psi = 0.06894757293 bar). PSI to Bar conversion comes up most often in US tire pressure and in US plumbing and well systems, typically when figures need restating for European tire pressures.
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 PSI equals 1.034213594 Bar.
15 psi × 0.06894757293 = 1.034213594 bar
FAQ
How do I convert PSI to Bar?
Multiply the PSI value by 0.06894757293 to get the equivalent value in Bar.
What is the formula for PSI to Bar?
The formula is bar = psi × 0.06894757293.
How many Bar are in 1 PSI?
1 PSI equals 0.06894757293 Bar.
Can I convert Bar back to PSI?
Yes. 1 Bar equals 14.50377377 PSI, and the related converter can reverse the calculation.
What are common names for PSI and Bar?
PSI is shown as psi and may also be searched as pounds per square inch, lbf/in². Bar is shown as bar and may also be searched as bars.
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