Convert Millimeters of Mercury to Millipascals
Convert Millimeters of Mercury (mmHg) to Millipascals (mPa) instantly and accurately.
Conversion Formula
mPa = mmHg × 133322.3874
About Millimeters of Mercury
One millimetre of mercury (mmHg) = pressure from 1 mm of mercury at 0°C and standard gravity = 133.322 Pa. Clinical medicine worldwide uses mmHg for blood pressure (normal ~120/80 mmHg) and for gas partial pressures in physiology: arterial O₂ ~95-100 mmHg; CO₂ ~40 mmHg; alveolar O₂ ~104 mmHg. Ophthalmologists measure intraocular pressure in mmHg (normal 10-21; glaucoma risk above 21). Vacuum equipment ratings are also given in mmHg. 760 mmHg = 1 atm. 1 mmHg = 133.322 Pa.
About Millipascals
A millipascal (mPa) is 10⁻³ Pa. It appears primarily in rheology as the millipascal-second (mPa·s = centipoise) for dynamic viscosity: water at 20°C is 1.002 mPa·s; olive oil ~80 mPa·s; honey 2,000-10,000 mPa·s. Food technology, polymer processing, pharmaceutical formulation, and inkjet printing all specify flow behaviour in mPa·s. Partial pressures of trace atmospheric gases and ultra-high-vacuum leak rates measured by residual gas analysers are also expressed in millipascals. 1 mPa = 10⁻³ Pa.
Quick Reference Table
| Millimeters of Mercury (mmHg) | Millipascals (mPa) |
|---|---|
| 1 mmHg | 133322 mPa |
| 2 mmHg | 266645 mPa |
| 5 mmHg | 666612 mPa |
| 10 mmHg | 1333220 mPa |
| 25 mmHg | 3333060 mPa |
| 50 mmHg | 6666120 mPa |
| 100 mmHg | 13332200 mPa |