Convert atmosphere (standard)s to bars
1 atm = 1.01325 bar — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
1.013 25bar
Exact decimal: 1.01325
As a fraction: 4053/4000
1 atm = 1.01325 bar
How to convert atmosphere (standard)s to bars
Multiply the number of atmosphere (standard)s by 1.01325 to get bars.
The exact factor is 1.01325 — as a fraction, 4053/4000.
Atmosphere (standard): Exactly 101 325 Pa by definition.
Bar: Exactly 100 kPa. Close to atmospheric pressure, which is why it caught on.
Atmosphere (standard) to Bar conversion table
| Atmosphere (standard)s (atm) | Bars (bar) |
|---|---|
| 1 atm | 1.013 25 |
| 2 atm | 2.0265 |
| 3 atm | 3.039 75 |
| 5 atm | 5.066 25 |
| 10 atm | 10.1325 |
| 20 atm | 20.265 |
| 25 atm | 25.331 25 |
| 50 atm | 50.6625 |
| 100 atm | 101.325 |
| 250 atm | 253.3125 |
| 500 atm | 506.625 |
| 1000 atm | 1013.25 |
Bar to Atmosphere (standard) conversion table
| Bars (bar) | Atmosphere (standard)s (atm) |
|---|---|
| 1 bar | 0.986 923 27 |
| 2 bar | 1.973 846 5 |
| 3 bar | 2.960 769 8 |
| 5 bar | 4.934 616 3 |
| 10 bar | 9.869 232 7 |
| 20 bar | 19.738 465 |
| 25 bar | 24.673 082 |
| 50 bar | 49.346 163 |
| 100 bar | 98.692 327 |
| 250 bar | 246.730 82 |
| 500 bar | 493.461 63 |
| 1000 bar | 986.923 27 |
Frequently asked
How many bars are in a atmosphere (standard)?
One atmosphere (standard) equals 1.01325 bars (atm → bar). That figure is exact, not rounded.
How do you convert atmosphere (standard)s to bars?
Multiply the number of atmosphere (standard)s by 1.01325 to get bars.
What is 1 bar in atmosphere (standard)s?
One bar is 0.9869232667 atmosphere (standard)s.
What is 10 atm in bar?
10 atm = 10.1325 bar.
What exactly is a atmosphere (standard)?
Exactly 101 325 Pa by definition.
What exactly is a bar?
Exactly 100 kPa. Close to atmospheric pressure, which is why it caught on.