Bar to Atmosphere
1 bar = 0.9869232667 atm
How to convert bar to atmosphere
Enter the value in bar (bar) above and the equivalent in atmosphere (atm) updates as you type. This conversion comes up when inflating tires with a gauge in a different unit than the door-sticker spec.
- A common car tire spec: 2.3 bar, about 33 psi → that is 2.269924 atm in atmosphere.
Typical situations: reading weather maps (hPa/mbar) vs US forecasts (inHg); diving and scuba tank pressures (bar vs psi).
You can also convert in the other direction: Atmosphere to Bar
Bar to Atmosphere conversion table
| Bar (bar) | Atmosphere (atm) |
|---|---|
| 1 | 0.986923 |
| 2 | 1.973847 |
| 5 | 4.934616 |
| 10 | 9.869233 |
| 25 | 24.673082 |
| 50 | 49.346163 |
| 100 | 98.692327 |
Watch out for
- kPa, hPa, and bar are all metric but differ by factors of 100/1000; car specs are usually bar or kPa
- Absolute vs gauge pressure (psia vs psig): tire gauges read gauge pressure
Frequently asked questions
How many atmospheres is 1 bar?
1 bar = 0.986923 atmospheres.
What is the formula to convert bar to atmospheres?
The formula is: atm = bar × 0.986923.
What is 10 bars in atmospheres?
10 bars = 9.869233 atmospheres.