Millimeters of mercury (mmHg) to Pascals (Pa) Conversion
Millimeters of mercury
The millimetre of mercury (mmHg) is a unit of pressure equal to the pressure exerted by a 1 mm column of mercury at 0 °C and standard gravity — approximately 133.322 Pa. It is the universal clinical standard for measuring blood pressure: normal adult blood pressure is approximately 120/80 mmHg (systolic/diastolic). The mmHg is also used in ophthalmology (intraocular pressure, normal ≈ 10–21 mmHg) and respiratory physiology.
Pascals
The pascal (Pa) is the SI derived unit of pressure, defined as one newton per square metre (N/m²), named after French mathematician Blaise Pascal who studied fluid pressure in the 17th century. Standard atmospheric pressure at sea level is 101,325 Pa (101.3 kPa). The pascal is a small unit for everyday use — a gentle breeze exerts approximately 1 Pa of dynamic pressure — so kilopascals (kPa) and megapascals (MPa) are more common in practical engineering contexts.
| Millimeters of mercury (mmHg) | Pascals (Pa) |
|---|---|
| 0.1 mmHg | 13.3322 Pa |
| 1 mmHg | 133.3224 Pa |
| 2 mmHg | 266.6447 Pa |
| 3 mmHg | 399.9671 Pa |
| 5 mmHg | 666.6118 Pa |
| 10 mmHg | 1,333.2237 Pa |
| 20 mmHg | 2,666.4474 Pa |
| 30 mmHg | 3,999.6711 Pa |
| 50 mmHg | 6,666.1185 Pa |
| 100 mmHg | 13,332.237 Pa |
| 1000 mmHg | 133,322.37 Pa |
Frequently Asked Questions (FAQ)
How many pascals are in 1 millimeters of mercury?
1 millimeters of mercury (mmHg) is exactly 133.322 pascals (Pa).
How do I convert millimeters of mercury to pascals?
Multiply the value in millimeters of mercury by 133.322 to get the result in pascals. Or use the converter above — type any number and see the result instantly.