PSI to Bars Converter

One PSI equals 0.06894757293 Bars (1 psi = 0.06894757293 bar). Multiply a PSI value by 0.06894757293 to get the equivalent in Bars. Enter a value above to calculate the result. You can also use the formula and reference table below.

Formula

bar = psi × 0.06894757293

Multiply the PSI value by 0.06894757293 to get the equivalent value in Bars.

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

Common conversion values from PSI to Bar
PSI (psi)Bar (bar)
0.10.006894757293
0.50.03447378647
10.06894757293
20.1378951459
50.3447378647
100.6894757293
251.723689323
503.447378647
1006.894757293
25017.23689323
50034.47378647
100068.94757293

How to Convert Manually

Use these steps to convert PSI values to Bar without the calculator.

  1. Write down the value in PSI (psi) that you want to convert.
  2. Multiply that value by 0.06894757293.
  3. For example, 10 PSI × 0.06894757293 = 0.6894757293 Bars.
  4. Label the result as Bar (bar).

Relative Size Comparison

1 PSI
1 Bar14.50377377 PSI
1 bar

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 Bars (1 psi = 0.06894757293 bar). PSI is used in US tire pressure and in US plumbing and well systems. Bar is used in 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.

Use the pressure conversion guide to compare mmHg, mbar, inHg, kPa, Pa, and torr across medical, weather, aviation, vacuum, and engineering work.

Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).

Worked Example

15PSI equals1.034213594Bars.

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 Bars.

What is the formula for PSI to Bar?

The formula is bar = psi × 0.06894757293.

How many Bars are in 1 PSI?

1 PSI equals 0.06894757293 Bars.

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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