How many mmH2O in 1 atmosphere [technical]?
The answer is 10000.

We assume you are converting between **millimeter of water [4 °C]** and **atmosphere [technical]**.

You can view more details on each measurement unit:

mmH2O or
atmosphere [technical]

The SI derived unit for **pressure** is the pascal.

1 pascal is equal to 0.10197162129779 mmH2O, or 1.0197162129779E-5 atmosphere [technical].

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between millimeters of water and atmospheres.

Type in your own numbers in the form to convert the units!

You can do the reverse unit conversion from atmosphere [technical] to mmH2O, or enter any two units below:

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