| Did you mean to convert | inch H2O | to | atmosphere [standard] atmosphere [technical] |
How many inch H2O in 1 atmosphere [standard]? The answer is 406.78246445404. We assume you are converting between inch water [4 °C] and atmosphere [standard]. You can view more details on each measurement unit: inch H2O or atmosphere [standard] The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.0040146307866177 inch H2O, or 9.8692326671601E-6 atmosphere [standard]. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between inches water and atmospheres. Type in your own numbers in the form to convert the units!
1 inch H2O to atmosphere [standard] = 0.00246 atmosphere [standard]
10 inch H2O to atmosphere [standard] = 0.02458 atmosphere [standard]
50 inch H2O to atmosphere [standard] = 0.12292 atmosphere [standard]
100 inch H2O to atmosphere [standard] = 0.24583 atmosphere [standard]
200 inch H2O to atmosphere [standard] = 0.49166 atmosphere [standard]
500 inch H2O to atmosphere [standard] = 1.22916 atmosphere [standard]
1000 inch H2O to atmosphere [standard] = 2.45832 atmosphere [standard]
You can do the reverse unit conversion from atmosphere [standard] to inch H2O, or enter any two units below:
The standard atmosphere (symbol: atm) is a unit of pressure defined as 101325 Pa (1.01325 bar). It is sometimes used as a reference pressure or standard pressure. It is approximately equal to Earth's atmospheric pressure at sea level.
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