The '''ශරීර ස්කන්ධ දර්ශකය'' ('''BMI'''), or '''Quetelet index''', is a [[heuristic]] proxy for human body fat based on an individual's weight and height. BMI does not actually measure the [[Body fat percentage|percentage of body fat]]. It was devised between 1830 and 1850 by the [[Belgium|Belgian]] [[polymath]] [[Adolphe Quetelet]] during the course of developing "social physics".<ref>{{cite journal |doi=10.1093/ndt/gfm517 |title=Adolphe Quetelet (1796–1874)—the average man and indices of obesity |year=2007 |last1=Eknoyan |first1=Garabed |journal=Nephrology Dialysis Transplantation |volume=23 |pmid=17890752 |pages=47–51 |issue=1}}</ref> Body mass index is defined as the individual's body mass divided by the square of his or her height. The formulae universally used in medicine produce a [[Units of measurement|unit of measure]] of kg/m<sup>2</sup>. BMI can also be determined using a BMI chart,<ref>E.g., the [http://www.nhlbi.nih.gov/guidelines/obesity/bmi_tbl.htm Body Mass Index Table] from the [[National Institutes of Health]]'s NHLBI.</ref> which displays BMI as a function of weight (horizontal axis) and height (vertical axis) using contour lines for different values of BMI or colors for different BMI categories.
{|
! <math>\mathrm{BMI}</math>
| <math>= \frac{\mbox{mass}(\mathrm{kg})}{\left(\mbox{height}(\mathrm{m})\right)^2}</math>
|-
| ||<math>= \frac{\mbox{mass}(\mathrm{lb})}{\left(\mbox{height}(\mathrm{in})\right)^2}\times 703</math>
|-
| ||<math>= \frac{\mbox{mass}(\mathrm{lb})}{\left(\mbox{height}(\mathrm{ft})\right)^2}\times 4.88</math>
|-
| ||<math>= \frac{\mbox{mass}(\mathrm{st})}{\left(\mbox{height}(\mathrm{in})\right)^2}\times 9840</math>
|}
[[en:Body Mass Index]]
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