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Atmosphere to Millibar Converter

Convert Atmospheres to Millibars

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How to Convert Atmospheres to Millibars

Converting atmospheres (atm) to millibars (mbar) is a common conversion. One standard atmosphere is equal to 1013.25 millibars.

Formula

Millibars = Atmospheres × 1013.25

or

mbar = atm × 1013.25

Step-by-step process

  1. Take the measurement in atmospheres
  2. Multiply that number by 1013.25
  3. The result is the equivalent amount in millibars

Examples

  • 1 atm = 1013.25 mbar
  • 0.1 atm = 101.325 mbar
  • 0.000986923 atm = 1 mbar

When to Convert Atmospheres to Millibars

This conversion is commonly used in meteorology, aviation, and other fields where atmospheric pressure is measured.

Common Atmospheres to Millibars Conversions

Here is a table of common atmosphere to millibar conversions for quick reference:

Atmospheres (atm) Millibars (mbar) Atmospheres (atm) Millibars (mbar)
1 1013.25 0.001 1.01325
10 10132.5 0.01 10.1325
100 101325 0.1 101.325
1000 1013250 1 1013.25

Frequently Asked Questions

How many millibars are in an atmosphere?

There are 1013.25 millibars in one atmosphere.

Why is the conversion factor 1013.25?

One standard atmosphere is defined as 101,325 pascals, and one millibar is 100 pascals. Therefore, one atmosphere is 101,325 / 100 = 1013.25 millibars.