Convert Centimeters of Mercury to Kilobars
Convert Centimeters of Mercury (cmHg) to Kilobars (kbar) instantly and accurately.
Conversion Formula
kbar = cmHg × 1.333223874e-5
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 Kilobars
A kilobar (kbar) = 1,000 bar = 100 MPa = 10⁸ Pa - standard in high-pressure geophysics and experimental petrology. Earth mantle phase transitions: olivine → wadsleyite at ~130-140 kbar (410 km depth); post-spinel transition at ~230 kbar (660 km). Diamond anvil cells routinely reach 100-400 kbar for materials synthesis and equation-of-state measurement. High-pressure synthesis of cubic boron nitride (~50 kbar) and superhard materials uses large-volume presses. Explosive shock pressures for mining and demolition: 100-1,000 kbar. 1 kbar = 100 MPa.
Quick Reference Table
| Centimeters of Mercury (cmHg) | Kilobars (kbar) |
|---|---|
| 1 cmHg | 1.333 × 10-5 kbar |
| 2 cmHg | 2.666 × 10-5 kbar |
| 5 cmHg | 6.666 × 10-5 kbar |
| 10 cmHg | 0.000133322 kbar |
| 25 cmHg | 0.000333306 kbar |
| 50 cmHg | 0.000666612 kbar |
| 100 cmHg | 0.00133322 kbar |