›› Convert atmosphere [standard] to millimeter water [4 °C]

mm H2O

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atmosphere [technical]
to mm H2O

›› More information from the unit converter

How many atmosphere in 1 mm H2O? The answer is 9.6784110535406E-5.
We assume you are converting between atmosphere [standard] and millimeter water [4 °C].
You can view more details on each measurement unit:
atmosphere or mm H2O
The SI derived unit for pressure is the pascal.
1 pascal is equal to 9.8692326671601E-6 atmosphere, or 0.10197162129779 mm H2O.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between atmospheres and millimeters water.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of atmosphere to mm H2O

1 atmosphere to mm H2O = 10332.27453 mm H2O

2 atmosphere to mm H2O = 20664.54906 mm H2O

3 atmosphere to mm H2O = 30996.82358 mm H2O

4 atmosphere to mm H2O = 41329.09811 mm H2O

5 atmosphere to mm H2O = 51661.37264 mm H2O

6 atmosphere to mm H2O = 61993.64717 mm H2O

7 atmosphere to mm H2O = 72325.9217 mm H2O

8 atmosphere to mm H2O = 82658.19622 mm H2O

9 atmosphere to mm H2O = 92990.47075 mm H2O

10 atmosphere to mm H2O = 103322.74528 mm H2O

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You can do the reverse unit conversion from mm H2O to atmosphere, or enter any two units below:

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›› Common pressure conversions

atmosphere to zettapascal
atmosphere to millipascal
atmosphere to centimeter mercury
atmosphere to hectobar
atmosphere to inch mercury
atmosphere to dyne/square centimeter
atmosphere to ounce/square inch
atmosphere to newton/square meter
atmosphere to terapascal
atmosphere to micron mercury

›› Definition: Atmosphere

The standard atmosphere (symbol: atm) is a unit of pressure defined as 101325 Pa (1.01325 bar). It is sometimes used as a reference pressure or standard pressure. It is approximately equal to Earth's atmospheric pressure at sea level.

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