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Free Bar to PSI Converter

Convert bar to pounds per square inch (psi) — useful for tyre and tube pressures, diving gear, and any equipment rated in bar when you need the US/UK unit.

1 bar = 14.5038 psi

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

Quick answer

To convert bar to psi, multiply by 14.5038, because 1 bar equals 14.5038 psi. For example, 2 bar is about 29.0 psi.

Formula & method

psi = bar × 14.503773773
  • bar — value in bar
  • psi — result in psi
  • 14.503773773 — exact conversion factor (1 bar = 14.503773773 psi)

To convert back, divide by 14.503773773 (1 psi = 0.068948 bar).

Bar to PSI — common values

Bar (bar)PSI (psi)
0.5 bar7.2519 psi
1 bar14.5038 psi
1.5 bar21.7557 psi
2 bar29.0075 psi
2.5 bar36.2594 psi
3 bar43.5113 psi
5 bar72.5189 psi
10 bar145.0377 psi

Examples

Example 1: One bar
Input
1 bar
Result
14.5038 psi
Why
Roughly atmospheric pressure; equals 14.5 psi.
Example 2: Bicycle/car range
Input
2 bar
Result
29.0075 psi
Why
2 bar ≈ 29 psi, a common tyre figure.
Example 3: Higher tyre pressure
Input
2.5 bar
Result
36.2594 psi
Why
2.5 bar ≈ 36 psi.
Example 4: Industrial
Input
10 bar
Result
145.0377 psi
Why
10 bar ≈ 145 psi.

Common mistakes

  • Rounding too early. Multiply by the full factor (14.503773773) first, then round only the final psi value.
  • Converting the wrong way. This page goes Bar → PSI; to go back, divide by 14.503773773.

Frequently asked questions

What is the exact bar to psi factor?

1 bar = 14.503774 psi. The bar is exactly 100,000 pascals.

How many psi is 2 bar?

2 bar is about 29.0 psi.

Is bar the same as atmospheres?

Nearly: 1 bar = 100,000 Pa and 1 atm = 101,325 Pa, so 1 bar ≈ 0.987 atm.

Where is bar used?

Bar is common in Europe and Asia for tyres, diving (depth pressure), HVAC, and process equipment.

Is this the absolute or gauge pressure?

The conversion is the same either way; bar and psi are units, while 'gauge' vs 'absolute' depends on your reference, not the unit.

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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