Enter millibars or atmospheres into the calculator to convert to the other value.
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Mbar to Atm Formula
The following formulas convert millibars to atmospheres and back, using Pascals as the base unit.
\mathrm{atm} = \frac{\mathrm{mbar}}{1013.25}- 1 atm = 101,325 Pa
- 1 bar = 100,000 Pa
- 1 mbar = 100 Pa
- 1 hPa = 100 Pa (equal to 1 mbar)
- 1 Torr ≈ 133.3223684211 Pa
- 1 psi ≈ 6,894.757293168 Pa
Mbar to Atm Conversion Table
How do you convert mbar to atm? Divide millibars by 1013.25, or use Pascals: atm = (mbar × 100) ÷ 101,325.
How do you convert atm to mbar? Multiply atmospheres by 1013.25, or use Pascals: mbar = (atm × 101,325) ÷ 100.
Example Problem
Convert 980 mbar to atm.
Use the formula: atm = mbar ÷ 1013.25.
atm = 980 ÷ 1013.25 ≈ 0.967185 atm