# Atmospheres to Millibars Conversion

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

**Results in Millibars:**

## How to Convert Atmospheres to Millibars

To convert an atmosphere measurement to a millibar measurement, multiply the pressure by the conversion ratio. One atmosphere is equal to 1,013.25 millibars, so use this simple formula to convert:

The pressure in millibars is equal to the atmospheres multiplied by 1,013.25.

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

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

## 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.

## 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.

## Atmosphere to Millibar Conversion Table

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

0.001 atm | 1.0133 mbar |

0.002 atm | 2.0265 mbar |

0.003 atm | 3.0398 mbar |

0.004 atm | 4.053 mbar |

0.005 atm | 5.0663 mbar |

0.006 atm | 6.0795 mbar |

0.007 atm | 7.0928 mbar |

0.008 atm | 8.106 mbar |

0.009 atm | 9.1193 mbar |

0.01 atm | 10.13 mbar |

0.02 atm | 20.27 mbar |

0.03 atm | 30.4 mbar |

0.04 atm | 40.53 mbar |

0.05 atm | 50.66 mbar |

0.06 atm | 60.8 mbar |

0.07 atm | 70.93 mbar |

0.08 atm | 81.06 mbar |

0.09 atm | 91.19 mbar |

0.1 atm | 101.33 mbar |

0.2 atm | 202.65 mbar |

0.3 atm | 303.98 mbar |

0.4 atm | 405.3 mbar |

0.5 atm | 506.63 mbar |

0.6 atm | 607.95 mbar |

0.7 atm | 709.28 mbar |

0.8 atm | 810.6 mbar |

0.9 atm | 911.93 mbar |

1 atm | 1,013 mbar |