Convert Centimeters of Mercury to Gigapascals
Convert Centimeters of Mercury (cmHg) to Gigapascals (GPa) instantly and accurately.
Conversion Formula
GPa = cmHg × 1.333223874e-6
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.
About Gigapascals
A gigapascal (GPa) = 10⁹ Pa = 10 kbar - the extreme-pressure unit for materials science and planetary physics. Bulk moduli: fused silica 72 GPa; iron 170 GPa; diamond 442 GPa (highest known). Earth's inner core: 330-360 GPa. Jupiter's core: ~40,000-70,000 GPa. NIF laser-shocked experiments create 100-100,000 GPa to reproduce planetary interior conditions. Metallic hydrogen is predicted to form above ~500 GPa and has been tentatively observed at 400-500 GPa in diamond anvil cells. 1 GPa = 10⁹ Pa = 10 kbar.
Quick Reference Table
| Centimeters of Mercury (cmHg) | Gigapascals (GPa) |
|---|---|
| 1 cmHg | 1.333 × 10-6 GPa |
| 2 cmHg | 2.666 × 10-6 GPa |
| 5 cmHg | 6.666 × 10-6 GPa |
| 10 cmHg | 1.333 × 10-5 GPa |
| 25 cmHg | 3.333 × 10-5 GPa |
| 50 cmHg | 6.666 × 10-5 GPa |
| 100 cmHg | 0.000133322 GPa |