# Convert Millibars to Atmospheres

Enter the pressure in millibars below to get the value converted to atmospheres.

**Results in Atmospheres:**

## How to Convert Millibars to Atmospheres

To convert a millibar measurement to a atmosphere measurement, multiply the pressure by the conversion ratio. One millibar is equal to 0.000987 atmospheres, so use this simple formula to convert:

The pressure in atmospheres is equal to the millibars multiplied by 0.000987.

**For example,**here's how to convert 5 millibars to atmospheres using the formula above.

Millibars and atmospheres are both units used to measure pressure. Keep reading to learn more about each unit of measure.

## Millibars

One millibar is equal to one-thousandth of a bar, which is defined as the pressure of one newton per square meter. One millibar is also equal to one hectopascal.

The millibar is a non-SI metric unit for pressure. In the metric system, "milli" is the prefix for 10^{-3}. Millibars can be abbreviated as *mbar*, for example 1 millibar can be written as 1 mbar.

## Atmospheres

The atmosphere is a reference measure of pressure equal to 101,325 pascals or 1,013,250 dynes. The atmosphere was originally defined as the pressure of 760 millimeters of mercury at standard gravity at 0 °C, but was later redefined in 1954 to be equal to 1,013,250 dynes.

Atmospheres can be abbreviated as *atm*, for example 1 atmosphere can be written as 1 atm.

## Millibar Measurements and Equivalent Atmosphere Conversions

Millibars | Atmospheres |
---|---|

1 mbar | 0.000987 atm |

2 mbar | 0.001974 atm |

3 mbar | 0.002961 atm |

4 mbar | 0.003948 atm |

5 mbar | 0.004935 atm |

6 mbar | 0.005922 atm |

7 mbar | 0.006908 atm |

8 mbar | 0.007895 atm |

9 mbar | 0.008882 atm |

10 mbar | 0.009869 atm |

11 mbar | 0.010856 atm |

12 mbar | 0.011843 atm |

13 mbar | 0.01283 atm |

14 mbar | 0.013817 atm |

15 mbar | 0.014804 atm |

16 mbar | 0.015791 atm |

17 mbar | 0.016778 atm |

18 mbar | 0.017765 atm |

19 mbar | 0.018752 atm |

20 mbar | 0.019738 atm |

21 mbar | 0.020725 atm |

22 mbar | 0.021712 atm |

23 mbar | 0.022699 atm |

24 mbar | 0.023686 atm |

25 mbar | 0.024673 atm |

26 mbar | 0.02566 atm |

27 mbar | 0.026647 atm |

28 mbar | 0.027634 atm |

29 mbar | 0.028621 atm |

30 mbar | 0.029608 atm |

31 mbar | 0.030595 atm |

32 mbar | 0.031582 atm |

33 mbar | 0.032568 atm |

34 mbar | 0.033555 atm |

35 mbar | 0.034542 atm |

36 mbar | 0.035529 atm |

37 mbar | 0.036516 atm |

38 mbar | 0.037503 atm |

39 mbar | 0.03849 atm |

40 mbar | 0.039477 atm |

## More Millibar Pressure Conversions

- Convert to Pascals
- 1 mbar is equal to 100 pascals
- Convert to Hectopascals
- 1 mbar is equal to 1 hectopascals
- Convert to Bars
- 1 mbar is equal to 0.001 bars
- Convert to Kilograms Per Square Centimeter
- 1 mbar is equal to 0.00102 kilograms per square centimeter
- Convert to Kilograms Per Square Meter
- 1 mbar is equal to 10.197162 kilograms per square meter
- Convert to Pounds Per Square Inch
- 1 mbar is equal to 0.014504 pounds per square inch
- Convert to Pounds Per Square Foot
- 1 mbar is equal to 2.088546 pounds per square foot
- Convert to Torr
- 1 mbar is equal to 0.750062 torr