1 meter of water [mH2O] = 73.555914 millimeter of mercury [mmHg]
Example: 1 meter of water [mH2O] equals 73.555914 millimeter of mercury [mmHg].
Examples
1 meter of water [mH2O] = 73.555914 millimeter of mercury [mmHg]
2 meter of water [mH2O] = 147.111827 millimeter of mercury [mmHg]
5 meter of water [mH2O] = 367.779568 millimeter of mercury [mmHg]
10 meter of water [mH2O] = 735.559135 millimeter of mercury [mmHg]
20 meter of water [mH2O] = 1471.118271 millimeter of mercury [mmHg]
25 meter of water [mH2O] = 1838.897838 millimeter of mercury [mmHg]
Practical Uses for meter water to millimeter mercury
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
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.
millimeter of mercury [mmHg]
Definition
The millimeter of mercury (mmHg) 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 millimeter of mercury 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 meter of water [mH2O].
Confirm the target unit is millimeter of mercury [mmHg].
How do I convert meter of water to millimeter of mercury?
Use this formula: 1 meter of water [mH2O] = 73.555914 millimeter of mercury [mmHg] Enter your value in the calculator and the result updates instantly.
How many millimeter of mercury are in 1 meter of water?
1 meter of water [mH2O] equals 73.555914 millimeter of mercury [mmHg].
Can I reverse this conversion?
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.