## Convert attopascal to inch water [4 °C]

 attopascal inch water

How many attopascal in 1 inch water? The answer is 2.4908890833333E+20. We assume you are converting between attopascal and inch water [4 °C]. You can view more details on each measurement unit: attopascal or inch water The SI derived unit for pressure is the pascal. 1 pascal is equal to 1.0E+18 attopascal, or 0.0040146307866177 inch water. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between attopascals and inches water. Type in your own numbers in the form to convert the units!

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## Definition: Attopascal

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.

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