How many mm H2O in 1 decibar?
The answer is 1019.7162129779.
We assume you are converting between millimeter water [4 °C] and decibar.
You can view more details on each measurement unit:
mm H2O or decibar
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.10197162129779 mm H2O, or 0.0001 decibar.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between millimeters water and decibars.
Type in your own numbers in the form to convert the units!
You can do the reverse unit conversion from decibar to mm H2O, or enter any two units below:
mm H2O to dekapascal
mm H2O to meter of air
mm H2O to millihg
mm H2O to micrometer of mercury
mm H2O to barad
mm H2O to gigapascal
mm H2O to kilogram/square centimeter
mm H2O to centitorr
mm H2O to inch of air
mm H2O to zettapascal
The SI prefix "deci" represents a factor of 10-1, or in exponential notation, 1E-1.
So 1 decibar = 10-1 bars.
The definition of a bar is as follows:
The bar is a measurement unit of pressure, equal to 1,000,000 dynes per square centimetre (baryes), or 100,000 newtons per square metre (pascals). The word bar is of Greek origin, báros meaning weight. Its official symbol is "bar"; the earlier "b" is now deprecated, but still often seen especially as "mb" rather than the proper "mbar" for millibars.
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