Standard Atmospheres to Bars Converter
Convert standard atmospheres (atm) to bars (bar), with the formula, a conversion table and exact factors.
Change the values and press Calculate to work out your own figures.
Enter a pressure, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.
Show the working
- 1 atm = 1.01325 bar
- 1 × 1.01325 = 1.01325 bar
How to convert standard atmospheres to bars
1 atm = 1.01325 bar, so multiply by 1.01325 to go from standard atmospheres to bars. Going the other way, 1 bar = 0.986923266716 atm.
bar = atm × 1.01325 atm = bar × 0.986923266716
Worked example:
1 atm = 1.01325 bar 5 × 1.01325 = 5.06625 bar
Standard Atmospheres to bars table
| Standard Atmospheres | Bars |
|---|---|
| 1 atm | 1.01325 bar |
| 2 atm | 2.0265 bar |
| 3 atm | 3.03975 bar |
| 4 atm | 4.053 bar |
| 5 atm | 5.06625 bar |
| 6 atm | 6.0795 bar |
| 7 atm | 7.09275 bar |
| 8 atm | 8.106 bar |
| 9 atm | 9.11925 bar |
| 10 atm | 10.1325 bar |
| 15 atm | 15.19875 bar |
| 20 atm | 20.265 bar |
| 25 atm | 25.33125 bar |
| 30 atm | 30.3975 bar |
| 40 atm | 40.53 bar |
| 50 atm | 50.6625 bar |
| 75 atm | 75.99375 bar |
| 100 atm | 101.325 bar |
| 250 atm | 253.3125 bar |
| 500 atm | 506.625 bar |
| 1000 atm | 1,013.25 bar |
About the units
- Standard Atmospheres (atm)
- Standard atmospheres, a specialised unit. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.
- Bars (bar)
- Bars, a metric unit. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.
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