Bar to Atmospheres Converter
Convert bar to atmosphere instantly. Type a value below — the result updates as you type.
When you need to convert bar to atmosphere
Pressure conversions are used for tyre inflation, weather readings, scuba and industrial gauges, and HVAC work, where gauges and manuals may be calibrated in different units.
Typical values: 0.5 bar is about 0.4935 atm, and 100 bar works out to roughly 98.6923 atm. Because the ratio is fixed at 0.9869, you can scale any amount linearly — doubling the bar doubles the atmospheres.
A single tyre or gauge spec is often printed in two or three pressure units side by side for international use.
How to convert bar to atmosphere
One bar equals 0.9869 atmospheres. To convert, multiply the number of bar by 0.9869:
atmospheres = bar × 0.9869
For example, 10 bar × 0.9869 = 9.8692 atmospheres.
Bar to atmospheres conversion table
| Pressure (bar) | Atmospheres (atm) |
|---|---|
| 1 bar | 0.9869 atm |
| 2 bar | 1.9738 atm |
| 3 bar | 2.9608 atm |
| 5 bar | 4.9346 atm |
| 10 bar | 9.8692 atm |
| 20 bar | 19.7385 atm |
| 50 bar | 49.3462 atm |
| 100 bar | 98.6923 atm |
FAQ
How many atmospheres are in a bar?
One bar = 0.9869 atmospheres.
How do I convert atmospheres back to bar?
Divide by 0.9869, or use the atmospheres to bar converter.