The pascal is one newton per square meter.
Pascals to mmHgs Converter — Pa to mmHg
Convert Pascal (Pa) to mmHg (mmHg) using the exact conversion factor (1 pascal = 0.0075006158 mmhg). See the formula, worked examples, conversion table, history, and common uses.
Pascals 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 1 / 133.3223874.
Pressure uses the pascal as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pascals to mmHgs
Pascal 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. Pascal is most often used for scientific and engineering pressure measurement worldwide.
Formula
mmhgs = pascals × 0.00750061575846
This factor comes from each unit's defined relationship to the category's base unit: 1 pascal equals 1 base unit, and 1 mmhg equals 133.322387415 base units, so dividing one by the other gives the direct pascal-to-mmhg factor of 0.00750061575846.
Simple example
1 Pa × 0.007500615758 = 0.0075006158 mmHg
1 pascal = 0.0075006158 mmhgs.
Real-world example
35 Pa × 0.007500615758 = 0.2625215515 mmHg
35 pascals = 0.2625215515 mmhgs.
Conversion table
| Pascal (Pa) | mmHg (mmHg) |
|---|---|
| 1 Pa | 0.0075006158 mmHg |
| 5 Pa | 0.0375030788 mmHg |
| 10 Pa | 0.0750061576 mmHg |
| 25 Pa | 0.187515394 mmHg |
| 50 Pa | 0.3750307879 mmHg |
| 100 Pa | 0.7500615758 mmHg |
Reverse conversion: mmHg to Pascal
0.0075006158 mmHg × 133.3223874 = 1.000000006 Pa
0.0075006158 mmhgs = 1.000000006 pascals.
pascals = mmhgs × 133.322387415
For a page dedicated to this direction, see mmHg to Pascal.
Understanding the Pascal
Pascal (Pa) measures pressure. The pascal is the SI derived unit of pressure: one newton of force per square meter. It is classified as a SI derived unit.
Where it's used: Standard scientific pressure unit worldwide
Uses of the Pascal today
- Scientific and engineering pressure measurement worldwide
- Meteorology (often as hectopascals, equivalent to millibars)
- Material science (stress and strength, typically in megapascals)
History of the Pascal
The pascal is named after Blaise Pascal, whose 17th-century experiments clarified the physics of fluid pressure and vacuum. It was adopted as the SI derived unit of pressure in 1971, replacing the older, non-coherent CGS pressure units used in much scientific work up to that point.
Historical origin. Pascal was not the invention of a single named person; it developed through the process described above.
Understanding the mmHg (mmHg)
Millimeters of mercury at standard gravity.
Pascal — sources
- BIPM SI Brochure — Coherent derived units — Defines the pascal as the SI unit of pressure.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many mmhgs are in 1 pascal?
1 pascal equals 0.0075006158 mmhgs, using the exact defined conversion factor rather than an estimate.
How do I convert pascal to mmhg?
Multiply the pascal value by 0.007500615758. The converter above does this instantly to whatever precision you set.
How do I convert mmhg back to pascal?
Use the reverse factor: 1 mmhg equals 133.3223874 pascals. You can also use the swap control in the converter above to flip the direction instantly.
What is a pascal?
Pascal (Pa) measures pressure. The pascal is the SI derived unit of pressure: one newton of force per square meter. It is classified as a SI derived unit.
What is a mmhg?
mmHg (mmHg) is a unit of pressure.
Is the pascal to mmhg conversion exact?
Yes. Both pascal and mmhg are defined by fixed standards rather than physical artifacts, so the factor of 0.007500615758 used above is exact to as many digits as you choose to display.
Where is the pascal still used today?
Standard scientific pressure unit worldwide