# Millimeter of water conversions

The millimeter of water conversion selector here selects the pressure/stress measurement unit to convert to starting from millimeters of water (mmH2O). To make a conversion starting from a unit of pressure other than millimeter of water, simply click on the "Reset" button.

## About millimeter of water

The **millimeter of water** is a unit of pressure equal to 9.80638 pascals (1 mmH_{2}O = 9.80638 Pa), the SI derived unit of pressure.

The millimeter of water (mmH_{2}O) is also equal to 0.0980638 hectopascals (hPa), or 0.00980638 kilopascals (kPa), or about 0.000096781 atmospheres (atm), or 0.0980638 millibars (mbar), or 0.073554 millimeters of mercury at 0 °C (mmHg), or 0.03937 inches of water at 4 °C (inH_{2}O), or 0.0014223 pounds per square inch (psi), or 0.2048105 pounds per square foot (psf) or 0.073554 torr (Torr).

The millimeters of water is the pressure applied by a column of water one millimeter high at 4 °C in a gravitational field.

The millimeter of water is used to measure lung pressures.

Symbol: mmH_{2}O

Plural: millimeters of water

Also called: millimetre of water (plural: millimetres of water, Int. spelling)

Millimeter of water conversions: a list with conversions from millimeters of water to other (metric, imperial, or customary) pressure and stress measurement units is shown below.

- millimeter of water to atmosphere (standard) (mmH2O to atm)
- millimeter of water to atmosphere (technical) (mmH2O to at)
- millimeter of water to bar (mmH2O to bar)
- millimeter of water to barye (mmH2O to Ba)
- millimeter of water to centibar (mmH2O to cbar)
- millimeter of water to centimeter of mercury (mmH2O to cmHg)
- millimeter of water to centimeter of water (mmH2O to cmH2O)
- millimeter of water to decibar (mmH2O to dbar)
- millimeter of water to dyne per square centimeter (mmH2O to dyn/cm²)
- millimeter of water to gigabar (mmH2O to Gbar)
- millimeter of water to gigapascal (mmH2O to GPa)
- millimeter of water to hectopascal (mmH2O to hPa)
- millimeter of water to inch of mercury (mmH2O to inHg)
- millimeter of water to inch of water (mmH2O to inH2O)
- millimeter of water to kilobar (mmH2O to kbar)
- millimeter of water to kilogram-force per square centimeter (mmH2O to kgf/cm²)
- millimeter of water to kilogram-force per square millimeter (mmH2O to kgf/mm²)
- millimeter of water to kilopascal (mmH2O to kPa)
- millimeter of water to kip per square inch (mmH2O to ksi)
- millimeter of water to megabar (mmH2O to Mbar)
- millimeter of water to megapascal (mmH2O to MPa)
- millimeter of water to millibar (mmH2O to mbar)
- millimeter of water to millimeter of mercury (mmH2O to mmHg)
- millimeter of water to millipascal (mmH2O to mPa)
- millimeter of water to newton per square meter (mmH2O to N/m²)
- millimeter of water to newton per square millimeter (mmH2O to N/mm²)
- millimeter of water to pascal (mmH2O to Pa)
- millimeter of water to pieze (mmH2O to pz)
- millimeter of water to pound per square foot (mmH2O to psf)
- millimeter of water to pound per square inch (mmH2O to psi)
- millimeter of water to torr (mmH2O to Torr)