Bars to Atmospheres (bar to atm) Converter
1 bar (bar) = 0.986923 atmospheres (atm). To convert bars to atmospheres, multiply by 0.986923: 2.2 bar × 0.986923 = 2.17123 atm.
Quick facts
- 1 bar = 0.986923 atm
- 1 atm = 1.01325 bar
- Formula: atm = bar × 0.986923
- Quick estimate: multiply by about 0.99
How to convert bars to atmospheres
- Take the value in bars.
- Multiply it by 0.986923 (the number of atmospheres in one bar).
- Round the result to the precision you need.
Worked example (car tyre pressure): 2.2 bar × 0.986923 = 2.17123 atm.
To convert atmospheres back to bars, multiply by 1.01325, or divide by 0.986923.
Source: NIST SP 811 (2008), Appendix B.
Bars to Atmospheres conversion table
| Bars [bar] | Atmospheres [atm] |
|---|---|
| 0.01 bar | 0.0098692327 atm |
| 0.1 bar | 0.0986923267 atm |
| 1 bar | 0.9869232667 atm |
| 2 bar | 1.9738465334 atm |
| 3 bar | 2.9607698001 atm |
| 5 bar | 4.9346163336 atm |
| 10 bar | 9.8692326672 atm |
| 20 bar | 19.7384653343 atm |
| 50 bar | 49.3461633358 atm |
| 100 bar | 98.6923266716 atm |
| 1000 bar | 986.923266716 atm |
bar to atm chart from 1 to 100
- 1 bar 0.986923 atm
- 2 bar 1.97385 atm
- 3 bar 2.96077 atm
- 4 bar 3.94769 atm
- 5 bar 4.93462 atm
- 6 bar 5.92154 atm
- 7 bar 6.90846 atm
- 8 bar 7.89539 atm
- 9 bar 8.88231 atm
- 10 bar 9.86923 atm
- 11 bar 10.8562 atm
- 12 bar 11.8431 atm
- 13 bar 12.83 atm
- 14 bar 13.8169 atm
- 15 bar 14.8038 atm
- 16 bar 15.7908 atm
- 17 bar 16.7777 atm
- 18 bar 17.7646 atm
- 19 bar 18.7515 atm
- 20 bar 19.7385 atm
- 25 bar 24.6731 atm
- 30 bar 29.6077 atm
- 35 bar 34.5423 atm
- 40 bar 39.4769 atm
- 45 bar 44.4115 atm
- 50 bar 49.3462 atm
- 55 bar 54.2808 atm
- 60 bar 59.2154 atm
- 65 bar 64.15 atm
- 70 bar 69.0846 atm
- 75 bar 74.0192 atm
- 80 bar 78.9539 atm
- 85 bar 83.8885 atm
- 90 bar 88.8231 atm
- 95 bar 93.7577 atm
- 100 bar 98.6923 atm
Atmospheres to Bars conversion table
| Atmospheres [atm] | Bars [bar] |
|---|---|
| 0.01 atm | 0.0101325 bar |
| 0.1 atm | 0.101325 bar |
| 1 atm | 1.01325 bar |
| 2 atm | 2.0265 bar |
| 3 atm | 3.03975 bar |
| 5 atm | 5.06625 bar |
| 10 atm | 10.1325 bar |
| 20 atm | 20.265 bar |
| 50 atm | 50.6625 bar |
| 100 atm | 101.325 bar |
| 1000 atm | 1013.25 bar |
Bars vs Atmospheres
| Bar | Atmosphere | |
|---|---|---|
| Symbol | bar | atm |
| Equals | 1 bar = 0.986923 atm | 1 atm = 1.01325 bar |
What is a bar?
Approximately equal to atmospheric pressure at sea level. Used in meteorology and for tire and hydraulic pressure.
What is an atmosphere?
Defined as standard atmospheric pressure at sea level. Used as a reference pressure in science and diving.
Frequently asked questions
How many atmospheres are in a bar?
There are 0.986923 atmospheres in 1 bar (1 bar = 0.9869232667 atm).
How many bars are in an atmosphere?
There are 1.01325 bars in 1 atmosphere (1 atm = 1.01325 bar).
How do I convert bars to atmospheres?
Multiply the number of bars by 0.986923. For example, 10 bar × 0.986923 = 9.86923 atm. To convert back, multiply by 1.01325.
What is 10 bar in atmospheres?
10 bar = 9.86923 atm.
What is 100 bar in atmospheres?
100 bar = 98.6923 atm.
Is the conversion exact?
Yes. The factor comes from the official definitions of both units (NIST SP 811 (2008), Appendix B). Results are shown to up to 10 decimal places; round them to suit your purpose.
Related conversions
Popular pressure conversions
- Bars to Pounds per Square Inch
- Pounds per Square Inch to Bars
- Pounds per Square Inch to Kilopascals
- Kilopascals to Pounds per Square Inch
- Atmospheres to Pounds per Square Inch
- Atmospheres to Bars
- Millimeters of Mercury to Kilopascals
- Bars to Kilopascals
- Bars to Pascals
- Pounds per Square Inch to Pascals
Convert bars to other units
- Bars to Pascals
- Bars to Kilopascals
- Bars to Pounds per Square Inch
- Bars to Torr
- Bars to Millimeters of Mercury
Convert other units to atmospheres
- Pascals to Atmospheres
- Kilopascals to Atmospheres
- Pounds per Square Inch to Atmospheres
- Torr to Atmospheres
- Millimeters of Mercury to Atmospheres
Open the full pressure converter with every unit →