Pound per Square Inch vs Bar: What's the Difference?
| Property | Pound per Square Inch (psi) | Bar (bar) |
|---|---|---|
| Symbol | psi | bar |
| System | Imperial | Metric (SI) |
| Category | pressure | pressure |
| Used in | United States, United Kingdom | Worldwide |
| Conversion | 1 psi = 0.0689476 bar | |
Definitions
Pound per Square Inch (psi)
The pound per square inch (symbol: psi or lbf/in²) is a unit of pressure in the imperial and US customary systems of measurement. It is defined as the pressure exerted by a force of one pound-force applied to an area of one square inch. In SI units, 1 psi equals approximately 6,894.757 pascals (6.894757 kilopascals).
Learn more →FAQ
What is the difference between Pound per Square Inch and Bar?
Pound per Square Inch (psi) belongs to the imperial system. Bar (bar) belongs to the metric system. 1 psi = 0.0689476 bar.
How to convert Pound per Square Inch to Bar?
Multiply the value in Pounds per Square Inch by 0.0689476. Formula: bar = psi × 0.0689476.
When should I use Pound per Square Inch vs Bar?
It depends on context. Pound per Square Inch is used in United States, United Kingdom. Bar is used in Worldwide.