Atmosphere to Millibar Converter
EngineeringPascals, bar, psi and more.
How to convert Atmosphere to Millibar
Multiply the atmosphere value by 1,013.25: 1 atm = 1,013.25 mbar. Going the other way, 1 mbar = 0.000986923 atm, so divide by 1,013.25 or use the Millibar to Atmosphere converter.
About these units
Atmosphere (atm)
A standard atmosphere is defined as exactly 101,325 pascals, roughly the average air pressure at sea level. It is about 14.7 psi or 1.013 bar.
Millibar (mbar)
A millibar is one thousandth of a bar, exactly 100 pascals (1 hPa). It is the traditional unit on weather maps.
Atmosphere to Millibar conversion table
| Atmosphere (atm) | Millibar (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 |
| 10 atm | 10,132.5 mbar |
| 20 atm | 20,265 mbar |
| 25 atm | 25,331.3 mbar |
| 50 atm | 50,662.5 mbar |
| 100 atm | 101,325 mbar |
| 500 atm | 506,625 mbar |
| 1,000 atm | 1.0133e+6 mbar |