How to convert bar to atmospheres
To convert bar to atmospheres, multiply by 0.986923266716. Pressure conversions are used for tire inflation, weather, scuba diving, hydraulics and medical devices.
Bar to Atmosphere conversion table
| Bar (bar) | Atmosphere (atm) |
|---|---|
| 0.1 bar | 0.0986923266716 atm |
| 0.5 bar | 0.493461633358 atm |
| 1 bar | 0.986923266716 atm |
| 2 bar | 1.97384653343 atm |
| 3 bar | 2.96076980015 atm |
| 4 bar | 3.94769306686 atm |
| 5 bar | 4.93461633358 atm |
| 10 bar | 9.86923266716 atm |
| 20 bar | 19.7384653343 atm |
| 25 bar | 24.6730816679 atm |
| 50 bar | 49.3461633358 atm |
| 100 bar | 98.6923266716 atm |
| 500 bar | 493.461633358 atm |
| 1,000 bar | 986.923266716 atm |
About the units
Bar (bar)
A bar equals exactly 100,000 pascals, close to atmospheric pressure at sea level.
Atmosphere (atm)
A standard atmosphere is defined as exactly 101,325 pascals.
How to use this converter
- Type the number of bar (bar) in the input box.
- The result in atmospheres appears instantly — no button needed.
- See the same value in every other pressure unit just below.
- Use “Swap units” to convert atmospheres back to bar.
Tips for better results
- Double-check which system a unit belongs to (for example US vs UK gallons).
- Use the swap button to convert in the opposite direction instantly.
- Bookmark the conversions you use most — each pair has its own page.
Frequently asked questions
How many atmospheres are in one bar?
One bar equals 0.986923266716 atmospheres. 0.986923266716 is the exact factor used by this converter.
How do I convert bar to atmospheres?
Multiply the value in bar by 0.986923266716. To go the other way, multiply atmospheres by 1.01325.
What is 10 bar in atm?
10 bar = 9.86923266716 atm. Also, 5 bar = 4.93461633358 atm and 100 bar = 98.6923266716 atm.
What is the difference between a bar and a atmosphere?
A bar equals exactly 100,000 pascals, close to atmospheric pressure at sea level. A standard atmosphere is defined as exactly 101,325 pascals.
Is this tool free and private?
Yes — the Bar to Atmosphere is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
Related tools
📬 Get new tools first — free
Join Taurang to hear about new calculators, converters and features. No spam; unsubscribe anytime.