How many cmH2O in 1 mmHg?
The answer is 1.35951002636.

We assume you are converting between **centimeter of water [4 °C]** and **millimeter of mercury [0 °C]**.

You can view more details on each measurement unit:

cmH2O or
mmHg

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

1 pascal is equal to 0.0101971621298 cmH2O, or 0.00750061561303 mmHg.

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

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

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

The torr (symbol: Torr) or millimetre of mercury (mmHg) is a non-SI unit of pressure. It is the atmospheric pressure that supports a column of mercury 1 millimetre high. The unit is named after Evangelista Torricelli, Italian physicist and mathematician, for his discovery of the principle of the barometer in 1643.

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