Bar to Atmospheres Converter
How to convert bar to atmospheres
atmospheres = bar ÷ 1.01325
To convert bar to atmospheres, divide the number of bar by 1.01325.
1 bar = 0.986923267 atm
Examples
- A typical car tire pressure: 2.2 bar ÷ 1.01325 = 2.17123119 atm
- 1 bar ÷ 1.01325 = 0.986923267 atm
Good to know
The two are close but not equal: 1 atm is exactly 1.01325 bar, and 1 bar is about 0.987 atm.
This is the standard atmosphere (atm), exactly 101,325 Pa. It is not the technical atmosphere (at), which is 1 kgf/cm² or 98,066.5 Pa.
Bar to atmospheres conversion table
| Bar | Atmospheres (atm) |
|---|---|
| 0.5 bar | 0.493461633 atm |
| 1 bar | 0.986923267 atm |
| 1.5 bar | 1.4803849 atm |
| 2 bar | 1.97384653 atm |
| 2.2 bar | 2.17123119 atm |
| 2.5 bar | 2.46730817 atm |
| 3 bar | 2.9607698 atm |
| 4 bar | 3.94769307 atm |
| 5 bar | 4.93461633 atm |
| 6 bar | 5.9215396 atm |
| 8 bar | 7.89538613 atm |
| 10 bar | 9.86923267 atm |
| 15 bar | 14.803849 atm |
| 20 bar | 19.7384653 atm |
| 50 bar | 49.3461633 atm |
| 100 bar | 98.6923267 atm |
| 200 bar | 197.384653 atm |
Unit definitions
- Bar
- A bar is exactly 100,000 pascals, slightly less than average atmospheric pressure at sea level. It is widely used in Europe for tire pressures, weather and industrial equipment.
- Atmosphere (atm)
- The standard atmosphere is defined as exactly 101,325 pascals, approximately the average air pressure at sea level. It is used as a reference pressure in chemistry and physics.