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Bar to PSI Converter Calculator

Convert pressure between bar and pounds per square inch (psi), with examples for tires, tools, and gauges.

Converted pressure
1 Bar equals
14.503768 PSI
Bar
1 bar
PSI
14.503768 psi
Kilopascal (kPa)
100 kpa
Megapascal (MPa)
0.1 mpa
Atmosphere (atm)
0.986923 atm

Converts through bar using the original factors: psi = 0.0689476 bar, kPa = 0.01 bar, MPa = 10 bar, atm = 1.01325 bar.

Results update as you type.

Bar to PSI Calculator

Convert pressure among bar, PSI, kilopascals, megapascals, and atmospheres. Enter the gauge or specification value, choose From unit, choose To unit, and the calculator returns the converted pressure plus equivalents for all supported units. It is useful for tire pressures, bicycle pumps, air tools, compressors, pressure washers, and engineering reference checks.

Conversion factor

1 bar = 14.5038 psi

The form converts through bar using these source factors: psi = 0.0689476 bar, kPa = 0.01 bar, MPa = 10 bar, and atm = 1.01325 bar.

target pressure=source pressure×source factor÷target factortarget\ pressure = source\ pressure × source\ factor \div target\ factor

For example, 2.5 bar converted to PSI is 2.5 ÷ 0.0689476, which is about 36.2595 PSI. In the other direction, 100 PSI × 0.0689476 = 6.89476 bar.

Quick pressure references

PressureEquivalent
1 bar14.5038 PSI
100 kPa1 bar
1 MPa10 bar
1 atm1.01325 bar

Most tire gauges show pressure above atmospheric pressure, while some technical calculations use absolute pressure. For wider unit choices, compare the pressure converter, torque converter, or force converter when working with mechanical specifications.

Frequently asked questions

How many PSI are in 1 bar?
1 bar = 14.5038 psi. The calculator also supports kPa, MPa, and atmosphere conversions through bar.
What is 2.5 bar in PSI?
2.5 bar is about 36.2595 PSI because 2.5 × 14.5038 = 36.2595.
How do I convert PSI to bar?
Multiply PSI by 0.0689476, or divide PSI by about 14.5038. For example, 100 PSI is about 6.89476 bar.
Is bar the same as atmospheric pressure?
No. 1 atmosphere equals 1.01325 bar, so it is close to but not exactly the same as 1 bar.

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Bar to PSI Converter Calculator updated at