Pascals (Pa) to Bar (bar) Conversion
Pascals
The pascal (Pa) is the SI derived unit of pressure, defined as one newton per square metre (N/m²), named after French mathematician Blaise Pascal who studied fluid pressure in the 17th century. Standard atmospheric pressure at sea level is 101,325 Pa (101.3 kPa). The pascal is a small unit for everyday use — a gentle breeze exerts approximately 1 Pa of dynamic pressure — so kilopascals (kPa) and megapascals (MPa) are more common in practical engineering contexts.
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.
| Pascals (Pa) | Bar (bar) |
|---|---|
| 0.1 Pa | 1.0E-6 bar |
| 1 Pa | 1.0E-5 bar |
| 2 Pa | 2.0E-5 bar |
| 3 Pa | 3.0E-5 bar |
| 5 Pa | 5.0E-5 bar |
| 10 Pa | 0.0001 bar |
| 20 Pa | 0.0002 bar |
| 30 Pa | 0.0003 bar |
| 50 Pa | 0.0005 bar |
| 100 Pa | 0.001 bar |
| 1000 Pa | 0.01 bar |