Convert Bars to atmospheres
1 bar = 0.986923 atmospheres · atm = bar ÷ 1.01325
When you need this conversion
Diving and laboratory work use these interchangeably because one atmosphere is very close to one bar. The small difference matters in precise chemistry and in dive tables where depth translates directly into pressure.
Bars to atmospheres conversion table
| Bars (bar) | Atmospheres (atm) |
|---|---|
| 1 bar | 0.986923 atm |
| 2 bar | 1.9738 atm |
| 3 bar | 2.9608 atm |
| 5 bar | 4.9346 atm |
| 10 bar | 9.8692 atm |
| 15 bar | 14.8038 atm |
| 20 bar | 19.7385 atm |
| 25 bar | 24.6731 atm |
| 50 bar | 49.3462 atm |
| 75 bar | 74.0192 atm |
| 100 bar | 98.6923 atm |
| 250 bar | 246.73 atm |
| 500 bar | 493.46 atm |
| 1,000 bar | 986.92 atm |
The formula
atm = bar ÷ 1.01325Because both units measure pressure, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.
Convert the other way
Atmospheres to bars →Related pressure conversions
- Pascals to atmospheres
- Kilopascals to atmospheres
- Bars to pascals
- Bars to kilopascals
- Bars to pounds per square inch
- Bars to torr
- Pounds per square inch to atmospheres
- Torr to atmospheres
- Pascals to kilopascals
- Pascals to bars
- Pascals to pounds per square inch
- Pascals to torr
Frequently asked questions
- How many atmospheres are in a bar?
- There are 0.986923 atmospheres in 1 bar. The formula is atm = bar ÷ 1.01325.
- How do you convert bars to atmospheres?
- Use the formula atm = bar ÷ 1.01325. For example, 10 bars equals 9.8692 atmospheres.
- Is the bars to atmospheres conversion exact?
- Yes. Bars and atmospheres are both units of pressure, related by an exact defined factor. Displayed results are rounded for readability.
- What is bar short for?
- bar is the standard symbol for bar. atm is the symbol for atmosphere.