Hectopascal is 100 pascal units.
Hectopascals to Meter of waters Converter — hPa to mH2O
Convert Hectopascal (hPa) to Meter of water (mH2O) using the exact conversion factor (1 hectopascal = 0.0101971621 meter of water). See the formula, worked examples, and conversion table.
Hectopascals to Meter of waters 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.
Meter of water column.
Result = input x 100 / 9806.65.
Stress Pressure units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Hectopascals to Meter of waters
Hectopascal and Meter of water 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: Hectopascal is 100 pascal units, and meter of water column.
Formula
meter of waters = hectopascals × 0.0101971621298
This factor comes from each unit's defined relationship to the category's base unit: 1 hectopascal equals 100 base units, and 1 meter of water equals 9806.65 base units, so dividing one by the other gives the direct hectopascal-to-meter of water factor of 0.0101971621298.
Simple example
1 hPa × 0.01019716213 = 0.0101971621 mH2O
1 hectopascal = 0.0101971621 meter of waters.
Real-world example
100 hPa × 0.01019716213 = 1.019716213 mH2O
100 hectopascals = 1.019716213 meter of waters.
Conversion table
| Hectopascal (hPa) | Meter of water (mH2O) |
|---|---|
| 1 hPa | 0.0101971621 mH2O |
| 10 hPa | 0.1019716213 mH2O |
| 50 hPa | 0.5098581065 mH2O |
| 100 hPa | 1.019716213 mH2O |
| 500 hPa | 5.098581065 mH2O |
| 1,000 hPa | 10.19716213 mH2O |
Reverse conversion: Meter of water to Hectopascal
0.0101971621 mH2O × 98.0665 = 0.9999999971 hPa
0.0101971621 meter of waters = 0.9999999971 hectopascals.
hectopascals = meter of waters × 98.0665
For a page dedicated to this direction, see Meter of water to Hectopascal.
Understanding the Hectopascal (hPa)
Hectopascal is 100 pascal units.
Understanding the Meter of water (mH2O)
Meter of water column.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many meter of waters are in 1 hectopascal?
1 hectopascal equals 0.0101971621 meter of waters, using the exact defined conversion factor rather than an estimate.
How do I convert hectopascal to meter of water?
Multiply the hectopascal value by 0.01019716213. The converter above does this instantly to whatever precision you set.
How do I convert meter of water back to hectopascal?
Use the reverse factor: 1 meter of water equals 98.0665 hectopascals. You can also use the swap control in the converter above to flip the direction instantly.
What is a hectopascal?
Hectopascal (hPa) is a unit of engineering.
What is a meter of water?
Meter of water (mH2O) is a unit of engineering.
Is the hectopascal to meter of water conversion exact?
Yes. Both hectopascal and meter of water are defined by fixed standards rather than physical artifacts, so the factor of 0.01019716213 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.