Bar (bar) to Pounds per square inch (psi) Conversion
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
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 (bar) | Pounds per square inch (psi) |
|---|---|
| 0.1 bar | 1.4504 psi |
| 1 bar | 14.5038 psi |
| 2 bar | 29.0075 psi |
| 3 bar | 43.5113 psi |
| 5 bar | 72.5189 psi |
| 10 bar | 145.0377 psi |
| 20 bar | 290.0755 psi |
| 30 bar | 435.1132 psi |
| 50 bar | 725.1887 psi |
| 100 bar | 1,450.3774 psi |
| 1000 bar | 14,503.7738 psi |
Frequently Asked Questions (FAQ)
How many pounds per square inch are in 1 bar?
1 bar (bar) is exactly 14.504 pounds per square inch (psi).
How do I convert bar to pounds per square inch?
Multiply the value in bar by 14.504 to get the result in pounds per square inch. Or use the converter above — type any number and see the result instantly.