Convert Centimeters of Mercury to Pascals
Convert Centimeters of Mercury (cmHg) to Pascals (Pa) instantly and accurately.
Conversion Formula
Pa = cmHg × 1333.223874
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 Pascals
The pascal (Pa) is the SI unit of pressure - 1 N/m², named after Blaise Pascal (1623-1662). Standard sea-level atmosphere ≈ 101,325 Pa. One pascal is very small: roughly the pressure of a single banknote lying flat. Pascal is simultaneously the SI unit for mechanical stress and elastic modulus: structural steel Young's modulus ~200 GPa; rubber shear modulus ~0.5 MPa. Used universally in fluid mechanics, acoustics, atmospheric science, and materials engineering. 1 Pa = 1 N/m².
Quick Reference Table
| Centimeters of Mercury (cmHg) | Pascals (Pa) |
|---|---|
| 1 cmHg | 1333.22 Pa |
| 2 cmHg | 2666.45 Pa |
| 5 cmHg | 6666.12 Pa |
| 10 cmHg | 13332.2 Pa |
| 25 cmHg | 33330.6 Pa |
| 50 cmHg | 66661.2 Pa |
| 100 cmHg | 133322 Pa |