How many inch of water in 1 millimeter of mercury?
The answer is 0.53524017143946.

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

You can view more details on each measurement unit:

inch of water or
millimeter of mercury

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

1 pascal is equal to 0.0040146307866177 inch of water, or 0.0075006156130264 millimeter of mercury.

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

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

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

1 inch of water to millimeter of mercury = 1.86832 millimeter of mercury

5 inch of water to millimeter of mercury = 9.3416 millimeter of mercury

10 inch of water to millimeter of mercury = 18.6832 millimeter of mercury

15 inch of water to millimeter of mercury = 28.0248 millimeter of mercury

20 inch of water to millimeter of mercury = 37.3664 millimeter of mercury

25 inch of water to millimeter of mercury = 46.708 millimeter of mercury

30 inch of water to millimeter of mercury = 56.0496 millimeter of mercury

40 inch of water to millimeter of mercury = 74.73281 millimeter of mercury

50 inch of water to millimeter of mercury = 93.41601 millimeter of mercury

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

inch of water to hectobar

inch of water to micron mercury

inch of water to decitorr

inch of water to technical atmosphere

inch of water to inch of air

inch of water to kip/square foot

inch of water to water column

inch of water to zeptopascal

inch of water to meganewton/square meter

inch of water to kip/square inch

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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