How to convert bars to atmospheres
Formula: atm = bar × 0.986923
Worked example: 2.5 bar → 2.5 × 0.986923 = 2.46731 atm
Bars to atmospheres conversion chart
| Bars (bar) | Atmospheres (atm) |
|---|---|
| 0.5 bar | 0.493462 atm |
| 1 bar | 0.986923 atm |
| 1.5 bar | 1.48038 atm |
| 2 bar | 1.97385 atm |
| 2.2 bar | 2.17123 atm |
| 2.5 bar | 2.46731 atm |
| 3 bar | 2.96077 atm |
| 3.5 bar | 3.45423 atm |
| 4 bar | 3.94769 atm |
| 5 bar | 4.93462 atm |
| 6 bar | 5.92154 atm |
| 8 bar | 7.89539 atm |
| 10 bar | 9.86923 atm |
| 15 bar | 14.8038 atm |
| 20 bar | 19.7385 atm |
| 50 bar | 49.3462 atm |
| 100 bar | 98.6923 atm |
| 200 bar | 197.385 atm |
| 300 bar | 296.077 atm |
What is a bar?
The bar equals 100,000 pascals, very close to the atmospheric pressure at sea level. Europeans inflate car tires to about 2.2 to 2.5 bar, an espresso machine brews at around 9 bar and a full scuba tank holds about 200 bar.
What is an atmosphere?
The standard atmosphere is defined as exactly 101,325 pascals, the average air pressure at sea level. Divers count roughly one extra atmosphere for every 10 meters, or 33 feet, of seawater.