Pounds per square inch (psi) to Bar (bar) Conversion
Pounds per square inch
Pounds per square inch (psi) is a unit of pressure defined as one pound-force per square inch (approximately 6,894.76 Pa). It is the standard for tyre pressure, hydraulic systems, and gas cylinders in the United States. Standard atmospheric pressure is approximately 14.696 psi. In engineering, gauge pressure (psig — relative to atmosphere) is distinguished from absolute pressure (psia — relative to a perfect vacuum), a distinction critical in thermodynamics and fluid system design.
Bar
The bar is a unit of pressure equal to exactly 100,000 pascals (100 kPa), accepted for use with the SI by the BIPM. It is close to one standard atmosphere (1 atm = 1.01325 bar) making it convenient for many practical applications. The bar is widely used in meteorology (weather maps), industrial gas and fluid systems, and tyre inflation in continental Europe. A typical car tyre is inflated to 2.2–2.5 bar; scuba diving tanks are filled to 200–300 bar.
| Pounds per square inch (psi) | Bar (bar) |
|---|---|
| 0.1 psi | 0.006894757293168 bar |
| 1 psi | 0.06894757293168 bar |
| 2 psi | 0.13789514586336 bar |
| 3 psi | 0.20684271879504 bar |
| 5 psi | 0.3447378646584 bar |
| 10 psi | 0.6894757293168 bar |
| 20 psi | 1.3789514586336 bar |
| 30 psi | 2.0684271879504 bar |
| 50 psi | 3.447378646584 bar |
| 100 psi | 6.894757293168 bar |
| 1000 psi | 68.94757293168 bar |
Frequently Asked Questions (FAQ)
How many bar are in 1 pounds per square inch?
1 pounds per square inch (psi) is exactly 0.068948 bar (bar).
How do I convert pounds per square inch to bar?
Multiply the value in pounds per square inch by 0.068948 to get the result in bar. Or use the converter above — type any number and see the result instantly.