Convert Petapascals to Centimeters of Mercury
Convert Petapascals (PPa) to Centimeters of Mercury (cmHg) instantly and accurately.
Conversion Formula
cmHg = PPa × 750061575800
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.
About Centimeters of Mercury
One centimetre of mercury (cmHg) = 10 mmHg ≈ 1,333.22 Pa. Historical medical and physiological literature used cmHg for intracardiac and intravascular pressures before mmHg became universal. Left ventricular systolic pressure ~12 cmHg; pulmonary artery systolic 2-3 cmHg. Some older European cardiological textbooks and pre-1970s surgical literature report pressures in cmHg. Central venous pressure, cerebral perfusion pressure, and intra-abdominal pressure are occasionally cited in cmHg in legacy datasets. 1 cmHg = 1,333.22 Pa.
Quick Reference Table
| Petapascals (PPa) | Centimeters of Mercury (cmHg) |
|---|---|
| 1 PPa | 7.501 × 1011 cmHg |
| 2 PPa | 1.5 × 1012 cmHg |
| 5 PPa | 3.75 × 1012 cmHg |
| 10 PPa | 7.501 × 1012 cmHg |
| 25 PPa | 1.875 × 1013 cmHg |
| 50 PPa | 3.75 × 1013 cmHg |
| 100 PPa | 7.501 × 1013 cmHg |