Bar to Atmosphere Converter (bar to atm)
1 bar equals 0.98692327 atmospheres — multiply the number of bar by 0.98692327 to convert. A bar is slightly less than one standard atmosphere, so the value is just under 1.
The formula
To convert bar to atmospheres, multiply by 0.98692327:
atm = bar × 0.98692327
For example, 10 bar × 0.98692327 = 9.8692327 atm. To reverse it, divide by 0.98692327 (or multiply by 1.01325).
Conversion table
| Bar | Atmospheres (atm) |
|---|---|
| 1 | 0.98692327 |
| 2 | 1.97384654 |
| 3 | 2.96076981 |
| 5 | 4.93461635 |
| 10 | 9.8692327 |
| 25 | 24.67308175 |
| 50 | 49.3461635 |
| 100 | 98.692327 |
| 500 | 493.461635 |
| 1000 | 986.92327 |
How to convert online
- Type the number of bar into the first box.
- Read the atmosphere value instantly in the second box.
- Enter an atm value to convert back to bar — it works both ways.
Use the Bar to Atmosphere Converter — free and instant in your browser.
Where this conversion is used
Bar is widely used in Europe for tyre pressure, diving and industrial gauges, while atmospheres describe ambient pressure. Converting bar to atm helps when comparing a metric gauge reading to a spec written in atmospheres, or interpreting weather and diving data.
FAQ
How many atmospheres are in a bar?
One bar equals 0.98692327 atm. So 10 bar is 9.8692327 atm and 100 bar is 98.692327 atm.
Is 1 bar the same as 1 atm?
Not quite. 1 bar is 0.98692327 atm — about 1.3% lower than one atmosphere.
How do I convert atmospheres back to bar?
Divide by 0.98692327, or multiply by 1.01325. So 1 atm is 1.01325 bar.
Is this converter free and private?
Yes. It runs entirely in your browser — nothing is uploaded or stored. It is free, needs no sign-up and works offline once loaded.
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Recommended reading
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Atmosphere to Bar Converter (atm to bar)
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