Millibars to Atmospheres Converter
How to convert millibars to atmospheres
atmospheres = millibars ÷ 1,013.25
To convert millibars to atmospheres, divide the number of millibars by 1,013.25.
1 mbar = 0.000986923267 atm
Examples
- Standard sea-level atmospheric pressure: 1,013.25 mbar ÷ 1,013.25 = 1 atm
- 1,000 mbar ÷ 1,013.25 = 0.986923267 atm
Good to know
This is the standard atmosphere (atm), exactly 101,325 Pa. It is not the technical atmosphere (at), which is 1 kgf/cm² or 98,066.5 Pa.
Millibars to atmospheres conversion table
| Millibars (mbar) | Atmospheres (atm) |
|---|---|
| 1 mbar | 0.000986923267 atm |
| 10 mbar | 0.00986923267 atm |
| 100 mbar | 0.0986923267 atm |
| 500 mbar | 0.493461633 atm |
| 900 mbar | 0.88823094 atm |
| 950 mbar | 0.937577103 atm |
| 980 mbar | 0.967184801 atm |
| 1,000 mbar | 0.986923267 atm |
| 1,013.25 mbar | 1 atm |
| 1,020 mbar | 1.00666173 atm |
| 1,030 mbar | 1.01653096 atm |
| 1,050 mbar | 1.03626943 atm |
| 1,100 mbar | 1.08561559 atm |
| 2,000 mbar | 1.97384653 atm |
Unit definitions
- Millibar (mbar)
- A millibar is one thousandth of a bar, exactly 100 pascals, and is identical to the hectopascal. It is used in meteorology for atmospheric pressure.
- Atmosphere (atm)
- The standard atmosphere is defined as exactly 101,325 pascals, approximately the average air pressure at sea level. It is used as a reference pressure in chemistry and physics.