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Free PSI to Bar Converter

Convert pounds per square inch (psi) to bar — the pressure units you meet on tyres, air compressors, and hydraulic equipment when moving between US and metric specs.

1 psi = 0.06895 bar

Pick any units and edit either box — it converts instantly in your browser.

Quick answer

To convert psi to bar, multiply by 0.0689476, because 1 bar equals 14.5038 psi. For example, a 32 psi car tyre is about 2.21 bar.

Formula & method

bar = psi × 0.0689475729
  • psi — value in psi
  • bar — result in bar
  • 0.0689475729 — exact conversion factor (1 psi = 0.0689475729 bar)

To convert back, divide by 0.0689475729 (1 bar = 14.503774 psi).

PSI to Bar — common values

PSI (psi)Bar (bar)
1 psi0.06895 bar
5 psi0.34474 bar
10 psi0.68948 bar
14.5038 psi1 bar
20 psi1.37895 bar
30 psi2.06843 bar
32 psi2.20632 bar
50 psi3.44738 bar

Examples

Example 1: About one bar
Input
14.5038 psi
Result
1 bar
Why
14.5 psi is almost exactly 1 bar (close to atmospheric pressure).
Example 2: Car tyre pressure
Input
32 psi
Result
2.20632 bar
Why
A typical cold tyre pressure of 32 psi.
Example 3: Air compressor
Input
100 psi
Result
6.89476 bar
Why
Many small compressors run around 90–120 psi.
Example 4: One psi
Input
1 psi
Result
0.06895 bar
Why
The base unit for reference.

Common mistakes

  • Rounding too early. Multiply by the full factor (0.0689475729) first, then round only the final bar value.
  • Converting the wrong way. This page goes PSI → Bar; to go back, divide by 0.0689475729.

Frequently asked questions

What is the exact psi to bar factor?

1 psi = 0.06894757 bar, and 1 bar = 14.50377 psi. The bar is defined as exactly 100,000 pascals.

How many bar is 32 psi?

32 psi is about 2.21 bar, a common car tyre pressure.

Is 1 bar the same as 1 atmosphere?

Almost. 1 bar = 100,000 Pa, while 1 standard atmosphere = 101,325 Pa, so 1 atm is about 1.013 bar — close but not identical.

Why are tyres often labelled in both psi and bar?

Because cars are sold worldwide: psi is common in the US/UK while bar (and kPa) are used across Europe and Asia.

Is psi a unit of force or pressure?

Pressure — it is pounds of force per square inch of area, so it already accounts for the area.

Sources & references

External references open in a new tab. We are independent and not affiliated with these organizations.

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  • ✓ Formula and method shown above
Last updated: How we calculateReport a correctionDisclaimer

Provided “as is” for general information only — results may be inaccurate, so verify before you rely on them. No warranty; use at your own risk.

Built and reviewed by HIFreeTools against the formula shown above and any authoritative references cited on this page. See our methodology and editorial standards.

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