Meter of water column.
Meter of waters to Hectopascals Converter — mH2O to hPa
Convert Meter of water (mH2O) to Hectopascal (hPa) using the exact conversion factor (1 meter of water = 98.0665 hectopascal). See the formula, worked examples, and conversion table.
Meter of waters to Hectopascals converter
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
Hectopascal is 100 pascal units.
Result = input x 9806.65 / 100.
Stress Pressure units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Meter of waters to Hectopascals
Meter of water and Hectopascal both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. Specifically: Meter of water column, and hectopascal is 100 pascal units.
Formula
hectopascals = meter of waters × 98.0665
This factor comes from each unit's defined relationship to the category's base unit: 1 meter of water equals 9806.65 base units, and 1 hectopascal equals 100 base units, so dividing one by the other gives the direct meter of water-to-hectopascal factor of 98.0665.
Simple example
1 mH2O × 98.0665 = 98.0665 hPa
1 meter of water = 98.0665 hectopascals.
Real-world example
100 mH2O × 98.0665 = 9,806.65 hPa
100 meter of waters = 9,806.65 hectopascals.
Conversion table
| Meter of water (mH2O) | Hectopascal (hPa) |
|---|---|
| 1 mH2O | 98.0665 hPa |
| 10 mH2O | 980.665 hPa |
| 50 mH2O | 4,903.325 hPa |
| 100 mH2O | 9,806.65 hPa |
| 500 mH2O | 49,033.25 hPa |
| 1,000 mH2O | 98,066.5 hPa |
Reverse conversion: Hectopascal to Meter of water
98.0665 hPa × 0.01019716213 = 1 mH2O
98.0665 hectopascals = 1 meter of water.
meter of waters = hectopascals × 0.0101971621298
For a page dedicated to this direction, see Hectopascal to Meter of water.
Understanding the Meter of water (mH2O)
Meter of water column.
Understanding the Hectopascal (hPa)
Hectopascal is 100 pascal units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many hectopascals are in 1 meter of water?
1 meter of water equals 98.0665 hectopascals, using the exact defined conversion factor rather than an estimate.
How do I convert meter of water to hectopascal?
Multiply the meter of water value by 98.0665. The converter above does this instantly to whatever precision you set.
How do I convert hectopascal back to meter of water?
Use the reverse factor: 1 hectopascal equals 0.0101971621 meter of waters. You can also use the swap control in the converter above to flip the direction instantly.
What is a meter of water?
Meter of water (mH2O) is a unit of engineering.
What is a hectopascal?
Hectopascal (hPa) is a unit of engineering.
Is the meter of water to hectopascal conversion exact?
Yes. Both meter of water and hectopascal are defined by fixed standards rather than physical artifacts, so the factor of 98.0665 used above is exact to as many digits as you choose to display.
Why do engineering unit conventions vary so much by region and industry?
Pressure, force, and stress can be expressed in metric (pascal, newton), US customary (psi, pound-force), or older and industry-specific units (atmosphere, torr, kip) depending on the country, industry, and even the equipment manufacturer, which is why engineers routinely need to convert between them when working across specs from different sources.