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

 inch of water attopascal

How many inch of water in 1 attopascal? The answer is 4.0146307866177E-21.
We assume you are converting between inch of water [4 °C] and attopascal.
You can view more details on each measurement unit:
inch of water or attopascal
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.0040146307866177 inch of water, or 1.0E+18 attopascal.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between inches of water and attopascals.
Type in your own numbers in the form to convert the units!

## ››Quick conversion chart of inch of water to attopascal

1 inch of water to attopascal = 2.4908890833333E+20 attopascal

2 inch of water to attopascal = 4.9817781666667E+20 attopascal

3 inch of water to attopascal = 7.47266725E+20 attopascal

4 inch of water to attopascal = 9.9635563333333E+20 attopascal

5 inch of water to attopascal = 1.2454445416667E+21 attopascal

6 inch of water to attopascal = 1.49453345E+21 attopascal

7 inch of water to attopascal = 1.7436223583333E+21 attopascal

8 inch of water to attopascal = 1.9927112666667E+21 attopascal

9 inch of water to attopascal = 2.241800175E+21 attopascal

10 inch of water to attopascal = 2.4908890833333E+21 attopascal

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You can do the reverse unit conversion from attopascal to inch of water, or enter any two units below:

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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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