1 millibar to atmospheres
1 mbar = 0.00098692 atm. Change the amount below, or read the formula and the reference table further down.
1 millibar equals
atmospheres
1 mbar = 0.00098692 atm
The formula
Millibars and atmospheres both measure pressure from the same zero, so a single multiplier does the job.
atm = mbar × 0.0009869233
Going the other way? Convert atmospheres to millibars.
Millibars to atmospheres table
Values either side of 1 mbar.
| Millibars (mbar) | Atmospheres (atm) |
|---|---|
| -4 | -0.003948 |
| -3.5 | -0.003454 |
| -3 | -0.002961 |
| -2.5 | -0.002467 |
| -2 | -0.001974 |
| -1.5 | -0.00148 |
| -1 | -0.000987 |
| -0.5 | -0.000493 |
| 0 | 0 |
| 0.5 | 0.000493 |
| 1 | 0.000987 |
| 1.5 | 0.00148 |
| 2 | 0.001974 |
| 2.5 | 0.002467 |
| 3 | 0.002961 |
| 3.5 | 0.003454 |
| 4 | 0.003948 |
| 4.5 | 0.004441 |
| 5 | 0.004935 |
| 5.5 | 0.005428 |
| 6 | 0.005922 |
Questions people ask
- How many atmospheres are in a millibar?
- One millibar equals 0.0009869233 atmospheres.
- How do I convert millibars to atmospheres by hand?
- Multiply the number of millibars by 0.0009869233. For a rough check, 0.001 is close enough for most everyday use.
- What is 1 millibar in atmospheres?
- 1 millibar is 0.00098692 atmospheres.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.