# 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

## Unit of Measurement Conversion Made Easy!

There are thousands of units of measure in use across the globe, and converting from one to another can be very difficult since each conversion requires a different formula to derive the result. Our unit of measurement conversion tools are meant to be dead easy. We break the mold of the typical dry and complicated experience. In addition to converting from one measurement to another, we provide the formula so you can see how the conversion is done, use it on you’re own calculator if you need to!

## Understanding the Metric System

The metric system makes it relatively easy to convert from one metric unit to another metric unit. The metric system uses a base unit, think meters or grams, and a prefix such as kilo or milli. The prefixes differ from the base units by differing powers of 10. So to convert within the metric system it’s usually a matter of multiplying or dividing by one of the powers of 10.

### Here is a list of some of the common metric prefixes:

- “kilo” – 1,000x larger
- “hecto” – 100x larger
- “deca” – 10x larger
- “deci” – 10x smaller
- “centi” – 100x smaller
- “milli” – 1,000x smaller

There is a helpful mnemonic for remembering the prefixes: “King Henry Died Until Drinking Chocolate Milk.”

The u in Until refers to the base unit.