Convert Millibar (mbar) to Atmosphere (atm) instantly. Enter any value and get the result immediately.
mbar → atm Converter
| Millibar (mbar) | Atmosphere (atm) |
|---|---|
| 0.1 mbar | 0.00009869 atm |
| 0.5 mbar | 0.00049346 atm |
| 1 mbar | 0.00098692 atm |
| 2 mbar | 0.00197385 atm |
| 5 mbar | 0.00493462 atm |
| 10 mbar | 0.00986923 atm |
| 20 mbar | 0.01973847 atm |
| 50 mbar | 0.04934616 atm |
| 100 mbar | 0.09869233 atm |
| 200 mbar | 0.19738465 atm |
| 500 mbar | 0.49346163 atm |
| 1000 mbar | 0.98692327 atm |
| 5000 mbar | 4.93461633 atm |
| 10000 mbar | 9.86923267 atm |
Formula: Atmosphere = Millibar × 0.00098692
Example: 1 mbar = 0.00098692 atm
You can also use the interactive converter above. Simply enter any Millibar value and the equivalent Atmosphere value will appear instantly. Click the ⇄ button to reverse the conversion.
A little context on Millibar and Atmosphere helps this conversion stick, along with some frequently asked questions below.
Step-by-step example — Convert 1000 mbar to atm:
A Millibar (mbar) equals one-thousandth of a bar and is the standard unit for weather pressure reports.
An Atmosphere (atm) represents average air pressure at sea level and is used as a natural reference point for pressure.
The formula is: Atmosphere = Millibar x 0.00098692. Multiply any Millibar value by 0.00098692 to get the equivalent in Atmosphere.
1 mbar = 0.00098692 atm.
1 atm = 1013.2533538686 mbar.
Millibar is smaller than Atmosphere. 1 Atmosphere = 1013.2533538686 mbar.
1013 mbar = 0.9997532692 atm.
3 atm = 3,039.75 mbar.
Millibars give forecasters a convenient scale for tracking small pressure changes that signal incoming storms — a drop of just a few millibars can indicate a developing low-pressure system.