Hectopascal is 100 pascal units.
Hectopascals to mmHgs Converter — hPa to mmHg
Convert Hectopascal (hPa) to mmHg (mmHg) using the exact conversion factor (1 hectopascal = 0.7500615758 mmhg). See the formula, worked examples, and conversion table.
Hectopascals to mmHgs 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.
Millimeters of mercury at standard gravity.
Result = input x 100 / 133.3223874.
Stress Pressure units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Hectopascals to mmHgs
Hectopascal and mmHg 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 millimeters of mercury at standard gravity.
Formula
mmhgs = hectopascals × 0.750061575846
This factor comes from each unit's defined relationship to the category's base unit: 1 hectopascal equals 100 base units, and 1 mmhg equals 133.322387415 base units, so dividing one by the other gives the direct hectopascal-to-mmhg factor of 0.750061575846.
Simple example
1 hPa × 0.7500615758 = 0.7500615758 mmHg
1 hectopascal = 0.7500615758 mmhgs.
Real-world example
100 hPa × 0.7500615758 = 75.00615758 mmHg
100 hectopascals = 75.00615758 mmhgs.
Conversion table
| Hectopascal (hPa) | mmHg (mmHg) |
|---|---|
| 1 hPa | 0.7500615758 mmHg |
| 10 hPa | 7.500615758 mmHg |
| 50 hPa | 37.50307879 mmHg |
| 100 hPa | 75.00615758 mmHg |
| 500 hPa | 375.0307879 mmHg |
| 1,000 hPa | 750.0615758 mmHg |
Reverse conversion: mmHg to Hectopascal
0.7500615758 mmHg × 1.333223874 = 0.9999999999 hPa
0.7500615758 mmhgs = 0.9999999999 hectopascals.
hectopascals = mmhgs × 1.33322387415
For a page dedicated to this direction, see mmHg to Hectopascal.
Understanding the Hectopascal (hPa)
Hectopascal is 100 pascal units.
Understanding the mmHg (mmHg)
Millimeters of mercury at standard gravity.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many mmhgs are in 1 hectopascal?
1 hectopascal equals 0.7500615758 mmhgs, using the exact defined conversion factor rather than an estimate.
How do I convert hectopascal to mmhg?
Multiply the hectopascal value by 0.7500615758. The converter above does this instantly to whatever precision you set.
How do I convert mmhg back to hectopascal?
Use the reverse factor: 1 mmhg equals 1.333223874 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 mmhg?
mmHg (mmHg) is a unit of engineering.
Is the hectopascal to mmhg conversion exact?
Yes. Both hectopascal and mmhg are defined by fixed standards rather than physical artifacts, so the factor of 0.7500615758 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.