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
Pressure Converter
Convert pascals, bars, PSI, atmospheres, mercury columns, water columns, and engineering pressure units.
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.
Pressure uses the pascal as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Hectopascals to mmHgs
Hectopascal and mmHg both show up on pressure gauges — psi is standard on US tire and tool specifications, while bar is the everyday pressure unit across most of the rest of the world. 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
35 hPa × 0.7500615758 = 26.25215515 mmHg
35 hectopascals = 26.25215515 mmhgs.
Conversion table
| Hectopascal (hPa) | mmHg (mmHg) |
|---|---|
| 1 hPa | 0.7500615758 mmHg |
| 5 hPa | 3.750307879 mmHg |
| 10 hPa | 7.500615758 mmHg |
| 25 hPa | 18.7515394 mmHg |
| 50 hPa | 37.50307879 mmHg |
| 100 hPa | 75.00615758 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 pressure.
What is a mmhg?
mmHg (mmHg) is a unit of pressure.
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.