Convert Millimeters of Mercury to Petapascals
Convert Millimeters of Mercury (mmHg) to Petapascals (PPa) instantly and accurately.
Conversion Formula
PPa = mmHg × 1.333223874e-13
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 Petapascals
A petapascal (PPa) = 10¹⁵ Pa - pressures found in stellar interiors. The Sun's centre is ~25 PPa, sustained by radiation pressure from nuclear fusion balanced against gravity. White dwarf stars: ~10⁴ PPa (electron degeneracy). Neutron stars: ~10⁹-10¹⁰ PPa, where nuclear structure fails and neutrons drip from nuclei at ~4 × 10⁸ PPa (the neutron drip line). The hadron-quark phase transition in the densest neutron star cores is estimated at 10¹⁰-10¹² PPa. No laboratory experiment can approach petapascal pressures. 1 PPa = 10¹⁵ Pa.
Quick Reference Table
| Millimeters of Mercury (mmHg) | Petapascals (PPa) |
|---|---|
| 1 mmHg | 1.333 × 10-13 PPa |
| 2 mmHg | 2.666 × 10-13 PPa |
| 5 mmHg | 6.666 × 10-13 PPa |
| 10 mmHg | 1.333 × 10-12 PPa |
| 25 mmHg | 3.333 × 10-12 PPa |
| 50 mmHg | 6.666 × 10-12 PPa |
| 100 mmHg | 1.333 × 10-11 PPa |