PSI to Bars Converter
Enter the pressure in psi below to convert it to bars.
Convert PSI to Bars
Enter a value in psi (psi) to convert to bars (bar).
Pounds per Square Inch to Bar Conversion Table
Table showing various pounds per square inch measurements converted to bars. Click any preset value or arrow to load it into the converter.
| PSI (psi) | Bars (bar) |
|---|---|
| 1 psi | 0.0689476 bar |
| 2 psi | 0.1378951 bar |
| 5 psi | 0.3447379 bar |
| 10 psi | 0.6894757 bar |
| 15 psi | 1.0342136 bar |
| 16 psi | 1.1031612 bar |
| 20 psi | 1.3789515 bar |
| 25 psi | 1.7236893 bar |
| 30 psi | 2.0684272 bar |
| 32 psi | 2.2063223 bar |
How to Convert PSI to Bars
To convert psi to bars, multiply the pressure by the following conversion ratio: 0.0689476 bars/pounds per square inch.
Since one pounds per square inch is equal to 0.0689476 bars, you can use this simple formula to convert:
The pressure in bars is equal to the pressure in psi multiplied by 0.0689476.
For example, here's how to convert 32 psi to bars using the formula above.
How Many Bars Are in a Pounds per Square Inch?
There are 0.0689476 bars in a pounds per square inch, which is why we use this value in the formula above.
Our pounds per square inch to bar calculator automatically converts your pressure measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
PSI and bars are both units used to measure pressure. Keep reading to learn more about each unit.
What Is a Pounds per Square Inch?
A pounds per square inch is a unit of pressure equal to 6,894.7572932 pascals (Pa), the base unit for pressure. Imperial & US pressure unit equal to 1 pound-force per square inch (6.89476 kPa). [1]
The pounds per square inch is classified as a US customary and imperial unit of pressure. PSI can be abbreviated as psi; for example, 1 pounds per square inch can be written as 1 psi.
When working with psi (psi) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, psi (psi) are widely used across large-scale industrial, bulk, and macro-level pressure specifications within US customary and imperial workflows, engineering documentation, and technical data sheets.
What Is a Bar?
A bar is a unit of pressure equal to 100,000 pascals (Pa), the base unit for pressure. Metric pressure unit equal to 100,000 Pascals (100 kPa). [2]
The bar is classified as a metric and SI-compatible unit of pressure. Bars can be abbreviated as bar; for example, 1 bar can be written as 1 bar.
When working with bars (bar) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, bars (bar) are widely used across large-scale industrial, bulk, and macro-level pressure specifications within SI metric workflows, engineering documentation, and technical data sheets.
When converting pressure between psi (psi) and bars (bar), keep full floating-point precision (1 psi = 0.0689476 bar; 1 bar = 14.5037738 psi) during intermediate calculations and round only the final bar figure to match your instrument tolerance.
More Pounds per Square Inch & Bar Conversions
Need to calculate in the opposite direction? Use our bars to psi converter (bar to psi) to switch your starting unit immediately. You can also explore related tools such as converting atmospheres to bars, converting kilopascals to bars, or converting psi to kilopascals.
Frequently Asked Questions
References
- [1]NIST SP 811 StandardNIST SP 811 (NIST SP 811 App. B.9 (Pressure & Stress))·Pressure Metrology Standard — PSI (psi) to Bars (bar)
- [2]NIST CUU SpecificationNIST CUU (Derived SI Unit: Pascal (Pa))·Unit Specifications: Pounds per Square Inch (psi) & Bar (bar)
- [3]BIPM ReferenceBIPM (SI Brochure (9th Ed.) — Mechanics)·Conversion Factors & Mathematical Basis (psi to bar)