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Common Benchmarks
Atmospheric pressure
101.325 kPa
Espresso machine
9 bar
Scuba tank
3000 psi
Blood pressure systolic
120 mmHg
Mountain air
70 kPa
Bicycle tire
80 psi
Formula
atm = bar × 0.9869232667
Example
Example: convert 40000 bar to atmospheres.
40000 bar = 39476.93066864 atm
Conversion table
| bar (bar) | atmospheres (atm) |
|---|---|
| 1 bar | 0.98692327 atm |
| 2 bar | 1.97384653 atm |
| 5 bar | 4.93461633 atm |
| 10 bar | 9.86923267 atm |
| 20 bar | 19.73846533 atm |
| 50 bar | 49.34616334 atm |
| 100 bar | 98.69232667 atm |
Explanation
These are both units.
How to convert bar to atmospheres
- Start with the value in bar (bar).
- Multiply it by 0.9869232667.
- The result is the measurement in atmospheres (atm).
Example: 40000 bar → 39476.93066864 atm
Frequently Asked Questions
How much is 40000 bar in atmospheres?
40000 bar is about 39476.93 atmospheres.
How many atmospheres is 1 bar?
1 bar is about 0.986923 atmospheres.
How many bar is 1 atmosphere?
1 atmosphere equals 1.01325 bar.
What is the difference between bar and atmospheres?
Both measure pressure, but they are commonly used in different contexts. Bar are commonly used in industry and some technical contexts. Atmospheres are used as a reference for standard atmospheric pressure.
Where are bar and atmospheres used?
In practice: Bar are commonly used in industry and some technical contexts. Atmospheres are used as a reference for standard atmospheric pressure.
Why does 1 bar equal 0.986923 atmospheres?
Because pressure units are defined with a fixed relationship (often relative to the pascal). To convert, multiply by that factor.