Bars to PSI Converter
Enter the pressure in bars below to convert it to psi.
Convert Bars to PSI
Enter a value in bars (bar) to convert to psi (psi).
Bar to Pounds per Square Inch Conversion Table
Table showing various bar measurements converted to psi. Click any preset value or arrow to load it into the converter.
| Bars (bar) | PSI (psi) |
|---|---|
| 1 bar | 14.5037738 psi |
| 1.1 bar | 15.9541512 psi |
| 2 bar | 29.0075475 psi |
| 2.2 bar | 31.9083023 psi |
| 4.4 bar | 63.8166046 psi |
| 5 bar | 72.5188689 psi |
| 10 bar | 145.0377377 psi |
| 11 bar | 159.5415115 psi |
| 15 bar | 217.5566066 psi |
| 20 bar | 290.0754755 psi |
How to Convert Bars to PSI
To convert bars to psi, multiply the pressure by the following conversion ratio: 14.5037738 psi/bar.
Since one bar is equal to 14.5037738 psi, you can use this simple formula to convert:
The pressure in psi is equal to the pressure in bars multiplied by 14.5037738.
For example, here's how to convert 2.2 bars to psi using the formula above.
How Many PSI Are in a Bar?
There are 14.5037738 psi in a bar, which is why we use this value in the formula above.
Our bar to pounds per square inch calculator automatically converts your pressure measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Bars and psi are both units used to measure pressure. Keep reading to learn more about each unit.
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). [1]
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.
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). [2]
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.
When converting pressure between bars (bar) and psi (psi), keep full floating-point precision (1 bar = 14.5037738 psi; 1 psi = 0.0689476 bar) during intermediate calculations and round only the final pounds per square inch figure to match your instrument tolerance.
More Bar & Pounds per Square Inch Conversions
Need to calculate in the opposite direction? Use our psi to bars converter (psi to bar) to switch your starting unit immediately. You can also explore related tools such as converting kilopascals to psi, converting megapascals to psi, or converting bars to atmospheres.
Frequently Asked Questions
References
- [1]NIST SP 811 StandardNIST SP 811 (NIST SP 811 App. B.9 (Pressure & Stress))·Pressure Metrology Standard — Bars (bar) to PSI (psi)
- [2]NIST CUU SpecificationNIST CUU (Derived SI Unit: Pascal (Pa))·Unit Specifications: Bar (bar) & Pounds per Square Inch (psi)
- [3]BIPM ReferenceBIPM (SI Brochure (9th Ed.) — Mechanics)·Conversion Factors & Mathematical Basis (bar to psi)