Body Mass Index Calculator
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Under 18 Years Old
BMI stands for "body mass index," a numerical value of your weight in relation to your height. BMIs are good indicators of healthy weights for adult men and women, regardless of body frame size. Higher BMIs (30+) are associated with significantly increased health risks in some people. Could your weight be increasing your health risks? Use our BMI Calculator to find out.
Note: The BMI ranges used in this calculator derive from the BMI guidelines of the National Heart, Lung, and Blood Institute (NHLBI), in cooperation with the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), of the National Institutes of Health, as published in Clinical Guidelines on the Identification, Evaluation, and Treatment of Overweight and Obesity in Adults, 1998.