**Full name:** attopascal

**Plural form:** attopascals

**Symbol:** aPa

**Category type:** pressure

**Scale factor:** 1.0E-18

The SI derived unit for pressure is the pascal.

1 pascal is equal to 1.0E+18 attopascal.

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

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

So 1 attopascal = 10^{-18} pascals.

The definition of a pascal is as follows:

The pascal (symbol Pa) is the SI unit of pressure.It is equivalent to one newton per square metre. The unit is named after Blaise Pascal, the eminent French mathematician, physicist and philosopher.

attopascal to micrometer of water [4 °C]

attopascal to water column [millimeter]

attopascal to yoctobar

attopascal to centitorr

attopascal to water column [inch]

attopascal to hectobar

attopascal to terapascal

attopascal to millitorr

attopascal to foot of air [0 °C]