Atmospheres to Millibars
Convert atmospheres (atm) to millibars (mbar). Type in either box; the other updates as you go.
How to convert atmospheres to millibars
To convert atmospheres to millibars, multiply the number of atmospheres by 1,013.25.
Example
Convert 5 atmospheres to millibars:
Atmosphere to millibar conversion chart
| Atmospheres (atm) | Millibars (mbar) |
|---|---|
| 1 atm | 1,013.25 mbar |
| 2 atm | 2,026.5 mbar |
| 3 atm | 3,039.75 mbar |
| 4 atm | 4,053 mbar |
| 5 atm | 5,066.25 mbar |
| 6 atm | 6,079.5 mbar |
| 7 atm | 7,092.75 mbar |
| 8 atm | 8,106 mbar |
| 9 atm | 9,119.25 mbar |
| 10 atm | 10,132.5 mbar |
| 12 atm | 12,159 mbar |
| 15 atm | 15,198.75 mbar |
| 20 atm | 20,265 mbar |
| 25 atm | 25,331.25 mbar |
| 30 atm | 30,397.5 mbar |
| 40 atm | 40,530 mbar |
| 50 atm | 50,662.5 mbar |
| 60 atm | 60,795 mbar |
| 70 atm | 70,927.5 mbar |
| 75 atm | 75,993.75 mbar |
| 80 atm | 81,060 mbar |
| 90 atm | 91,192.5 mbar |
| 100 atm | 101,325 mbar |
| 150 atm | 151,987.5 mbar |
| 200 atm | 202,650 mbar |
| 250 atm | 253,312.5 mbar |
| 500 atm | 506,625 mbar |
| 1,000 atm | 1,013,250 mbar |
Going the other way? See the millibars to atmospheres chart.
About the units
Atmosphere (atm)
A standard atmosphere is exactly 101,325 pascals, average air pressure at sea level.
Millibar (mbar)
A millibar is one thousandth of a bar, the same as a hectopascal. Weather reports use it.
Frequently asked questions
How many millibars are in an atmosphere?
There are 1,013.25 millibars in an atmosphere.
How many atmospheres are in a millibar?
There are 0.0009869232667 atmospheres in a millibar.
How do you convert atmospheres to millibars?
To convert atmospheres to millibars, multiply the number of atmospheres by 1,013.25.
What is 5 atmospheres in millibars?
5 atmospheres equals 5,066.25 millibars.
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