**Full name:** inch of water [4 °C]

**Plural form:** inches of water

**Symbol:** inH2O

**Alternate spelling:** in of water

**Category type:** pressure

**Scale factor:** 249.08890833333

The SI derived unit for pressure is the pascal.

1 pascal is equal to 0.0040146307866177 inch of water.

Valid units must be of the **pressure** type.

You can use this form to select from known units:

inch of water to micron of mercury [0 °C]

inch of water to kilopond/square metre

inch of water to technical atmosphere

inch of water to newton/square metre

inch of water to exabar

inch of water to pound/square inch [absolute]

inch of water to inch of air [0 °C]

inch of water to zeptobar

inch of water to ton/square inch [short]

inch of water to terapascal