Convert atmospheres to bars
1 atm = 1.01325 bar. Change the amount below, or read the formula and the reference table further down.
1 atmosphere equals
bars
1 atm = 1.01325 bar
The formula
Atmospheres and bars both measure pressure from the same zero, so a single multiplier does the job.
bar = atm × 1.01325
Going the other way? Convert bars to atmospheres.
Atmospheres to bars table
Common values, rounded for reading.
| Atmospheres (atm) | Bars (bar) |
|---|---|
| 1 | 1.0133 |
| 2 | 2.0265 |
| 3 | 3.0398 |
| 4 | 4.053 |
| 5 | 5.0663 |
| 6 | 6.0795 |
| 7 | 7.0928 |
| 8 | 8.106 |
| 9 | 9.1193 |
| 10 | 10.1325 |
| 15 | 15.1988 |
| 20 | 20.265 |
| 25 | 25.3313 |
| 30 | 30.3975 |
| 40 | 40.53 |
| 50 | 50.6625 |
| 75 | 75.9938 |
| 100 | 101.33 |
| 250 | 253.31 |
| 500 | 506.63 |
| 1,000 | 1,013.25 |
Questions people ask
- How many bars are in a atmosphere?
- One atmosphere equals 1.01325 bars.
- How do I convert atmospheres to bars by hand?
- Multiply the number of atmospheres by 1.01325. For a rough check, 1 is close enough for most everyday use.
- What is 1 atmosphere in bars?
- 1 atmosphere is 1.01325 bars.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.