Millibars to Atmospheres Converter
Convert millibars (mbar) to atmospheres (atm)
Result
0.000986923267 atm
Atmospheres
1 mbar = 0.000986923267 atm
1 mbar in other units
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- 3Read the resultSee it in every other unit too
How to convert millibars to atmospheres
One millibar equals 0.0009869233 atmospheres, so multiply the number of millibars by 0.0009869233.
atm = mbar × 0.0009869233
1 mbar = 0.0009869233 atm · 1 atm = 1,013.25 mbar
Worked example
To convert 5 millibars to atmospheres: 5 mbar × 0.0009869233 = 0.004934616 atm.
About millibars (mbar)
A millibar is one thousandth of a bar (equal to a hectopascal), used in weather maps.
About atmospheres (atm)
A standard atmosphere is exactly 101,325 Pa, the average air pressure at sea level.
More conversions
Millibars to other units
Frequently asked questions
How many atmospheres are in one millibar?
One millibar equals 0.0009869233 atmospheres.
How many millibars are in one standard atmosphere?
One standard atmosphere equals 1,013.25 millibars.
How do I convert millibars to atmospheres?
Use the formula atm = mbar × 0.0009869233. For example, 5 mbar × 0.0009869233 = 0.004934616 atm.