## ››Convert attobar to millibar

 attobar millibar

## ››More information from the unit converter

How many attobar in 1 millibar? The answer is 1.0E+15.
We assume you are converting between attobar and millibar.
You can view more details on each measurement unit:
attobar or millibar
The SI derived unit for pressure is the pascal.
1 pascal is equal to 10000000000000 attobar, or 0.01 millibar.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between attobars and millibars.
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## ››Definition: Attobar

The SI prefix "atto" represents a factor of 10-18, or in exponential notation, 1E-18.

So 1 attobar = 10-18 bars.

The definition of a bar is as follows:

The bar is a measurement unit of pressure, equal to 1,000,000 dynes per square centimetre (baryes), or 100,000 newtons per square metre (pascals). The word bar is of Greek origin, báros meaning weight. Its official symbol is "bar"; the earlier "b" is now deprecated, but still often seen especially as "mb" rather than the proper "mbar" for millibars.

## ››Definition: Millibar

A millibar (mb) is 1/1000th of a bar, a unit for measurement of pressure. It is not an SI unit of measure, however it is one of the units used in meteorology when describing atmospheric pressure. The SI unit is the pascal (Pa), with 1 millibar = 100 pascals (a hectopascal)

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