1 standard atmosphere [atm] = 10.332275 meter of water [mH2O]
Example: 1 standard atmosphere [atm] equals 10.332275 meter of water [mH2O].
Examples
1 standard atmosphere [atm] = 10.332275 meter of water [mH2O]
2 standard atmosphere [atm] = 20.664549 meter of water [mH2O]
5 standard atmosphere [atm] = 51.661373 meter of water [mH2O]
10 standard atmosphere [atm] = 103.322745 meter of water [mH2O]
20 standard atmosphere [atm] = 206.645491 meter of water [mH2O]
25 standard atmosphere [atm] = 258.306863 meter of water [mH2O]
Practical Uses for atmosphere to meter water
quick homework checksshopping and product comparisonstravel planningprofessional estimatesDIY and household measurementsgeneral reference
Sources and Accuracy
Pressure conversions use pascal as the reference unit and include common engineering, weather, tire, and laboratory pressure units.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
About These Units
standard atmosphere [atm]
Definition
The standard atmosphere is a pressure unit equal to 101,325 pascals.
History
Atmosphere was defined around average sea-level air pressure for reference calculations.
Current use
Atmospheres are used in chemistry, gas laws, diving references, and technical pressure comparisons.
meter of water [mH2O]
Definition
The meter of water (mH2O) is a pressure unit used to express measurements in this converter.
History
This unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current use
Use meter of water when comparing pressure values, checking specifications, converting between systems, or preparing quick estimates.
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How to Convert
Enter the value in the “From value” field.
Confirm the source unit is standard atmosphere [atm].