Body Mass Index (BMI)

BMI is a rough indicator of whether you are underweight, overweight, or just right. Find your BMI by clicking on one of the two unit buttons below, and entering your height and weight in the spaces provided. Then look up your BMI value in the table below for additional information on possible cardiovascular risk.

The BMI is only an approximate measure. Muscle weighs more than fat, and so very muscular people have a higher BMI for any given height and weight. Interpret your BMI accordingly, and see your doctor if you have any concerns.

Body Mass Index	Disease Risk (more is higher compared to "normal")	Waist Measurement (higher numbers signify increased risk)
BMI	Weight Category	Men < 102 cm (40") Women <  88 cm (35")	Men > 102 cm (40") Women >  88 cm (35")
0.0 - 18.4	Underweight	-	-
18.5 - 24.9	Normal	-	-
25.0 - 29.9	Overweight	1	2
30.0 - 34.9	Obese	2	3
35.0 - 39.9	More Obese	3	3
40.0+	Extremely Obese	4	4

Source: National Heart, Lung, and Blood Institute, National Institutes of Health, U.S. Department of Health and Human Services. Adapted from S. Going and R. Davis, "Body Composition." In American College of Sports Medicine, ACSM, ACSM's Resource Manual for Guidelines for Exercise Testing and Prescription, fourth edition (Baltimore, MD: American College of Sports Medicine, 2001), table 45.1, p. 393. Copyright © 2001 by the ACSM. Reproduced with permission.