Atmospheres to bar
Type a value in atm to get it in bar instantly.
That's 1.13× as much pressure as an espresso machine, while a fire hose is 1.18× higher. Spread over a fingertip, that is like resting 10.33 kg on it.
Convert the other way: bar to atm
What it means
How much pressure is that?
Tyre and tank figures are gauge pressure, measured above the surrounding air. Weather and altitude figures are absolute.
The math
How to convert atm to bar
To convert atmospheres to bar, multiply by 1.01325.
Example: 10 atm × 1.01325 = 10.1325 bar.
In the other direction, 1 bar = 0.986923 atm.
Every unit
Your pressure in every unit
Tables
atm to bar conversion table
| atm | bar |
|---|---|
| 0.5 atm | 0.506625 bar |
| 1 atm | 1.01325 bar |
| 1.5 atm | 1.51988 bar |
| 2 atm | 2.0265 bar |
| 2.5 atm | 2.53313 bar |
| 3 atm | 3.03975 bar |
| 4 atm | 4.053 bar |
| 5 atm | 5.06625 bar |
| 10 atm | 10.1325 bar |
| 15 atm | 15.1988 bar |
| 20 atm | 20.265 bar |
| 30 atm | 30.3975 bar |
| 50 atm | 50.6625 bar |
| 100 atm | 101.325 bar |
bar to atm conversion table
| bar | atm |
|---|---|
| 0.5 bar | 0.493462 atm |
| 1 bar | 0.986923 atm |
| 1.5 bar | 1.48038 atm |
| 2 bar | 1.97385 atm |
| 2.5 bar | 2.46731 atm |
| 3 bar | 2.96077 atm |
| 4 bar | 3.94769 atm |
| 5 bar | 4.93462 atm |
| 10 bar | 9.86923 atm |
| 15 bar | 14.8038 atm |
| 20 bar | 19.7385 atm |
| 30 bar | 29.6077 atm |
| 50 bar | 49.3462 atm |
| 100 bar | 98.6923 atm |
Quick answers
Quick answers
- How many bar is 1 atm?
- 1 atm is 1.01325 bar.
- How many bar is 10 atm?
- 10 atm is 10.1325 bar.
The units
About these units
Atmospheres (atm)
One standard atmosphere is defined as exactly 101,325 pascals: the average air pressure at sea level. Diving depth adds about one atmosphere every 10 meters.
Bar (bar)
One bar is 100,000 pascals, chosen because it is almost exactly the air pressure at sea level. Divers, mechanics and brewers all work in bar.
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