Convert Centimeters of Mercury to Kilopounds per Square Inch
Convert Centimeters of Mercury (cmHg) to Kilopounds per Square Inch (ksi) instantly and accurately.
Conversion Formula
ksi = cmHg × 0.0001933677746
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 Kilopounds per Square Inch
One ksi (kilopound per square inch) = 1,000 psi ≈ 6.895 MPa - the standard engineering stress unit in the US. ASTM A36 structural steel: 36 ksi yield, 58-80 ksi tensile. ASTM A325 high-strength bolts: 92 ksi proof load. AISC steel construction tables, FAA/MIL-SPEC aerospace allowables, and ASME Section VIII pressure vessel design all use ksi. Fracture toughness (K_IC) for steels: 50-200 ksi·√in. Convenient because it keeps large structural stresses as manageable 3-digit numbers. 1 ksi = 6.895 MPa.
Quick Reference Table
| Centimeters of Mercury (cmHg) | Kilopounds per Square Inch (ksi) |
|---|---|
| 1 cmHg | 0.000193368 ksi |
| 2 cmHg | 0.000386736 ksi |
| 5 cmHg | 0.000966839 ksi |
| 10 cmHg | 0.00193368 ksi |
| 25 cmHg | 0.00483419 ksi |
| 50 cmHg | 0.00966839 ksi |
| 100 cmHg | 0.0193368 ksi |