›› Convert millimeter water [4 C] to water column [inch]

mm H2O
water column [inch]

Did you mean to convert mm H2O to water column [centimeter]
water column [inch]
water column [millimeter]

›› More information from the unit converter

How many mm H2O in 1 water column [inch]? The answer is 25.399999830047.
We assume you are converting between millimeter water [4 C] and water column [inch].
You can view more details on each measurement unit:
mm H2O or water column [inch]
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.10197162129779 mm H2O, or 0.0040146307866177 water column [inch].
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between millimeters water and water column.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of mm H2O to water column [inch]

1 mm H2O to water column [inch] = 0.03937 water column [inch]

10 mm H2O to water column [inch] = 0.3937 water column [inch]

20 mm H2O to water column [inch] = 0.7874 water column [inch]

30 mm H2O to water column [inch] = 1.1811 water column [inch]

40 mm H2O to water column [inch] = 1.5748 water column [inch]

50 mm H2O to water column [inch] = 1.9685 water column [inch]

100 mm H2O to water column [inch] = 3.93701 water column [inch]

200 mm H2O to water column [inch] = 7.87402 water column [inch]

›› Want other units?

You can do the reverse unit conversion from water column [inch] to mm H2O, or enter any two units below:

Enter two units to convert


›› Common pressure conversions

mm H2O to inch mercury
mm H2O to yoctobar
mm H2O to ton/square inch
mm H2O to centipascal
mm H2O to centimeter water
mm H2O to petabar
mm H2O to inch water
mm H2O to centimeter of mercury
mm H2O to zeptopascal
mm H2O to inch water column

›› Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!