**Full name:** attobar

**Plural form:** attobars

**Category type:** pressure

**Scale factor:** 1.0E-13

The SI derived unit for pressure is the pascal.

1 pascal is equal to 10000000000000 attobar.

Valid units must be of the **pressure** type.

You can use this form to select from known units:

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.

attobar to pound/square inch [gauge]

attobar to picobar

attobar to inch of water [4 °C]

attobar to yoctopascal

attobar to dyne/square centimetre

attobar to pascal

attobar to pound/square inch [absolute]

attobar to terabar

attobar to kilogram/square centimetre

attobar to water column [inch]