Overweight and obesity are increasingly common conditions in the United States and other developed countries. It is used for both men and women, age 18 or older. This is the World Health Organization's (WHO) recommended body weight based on BMI values for adults. These categories are the same for men and women of all body types and all ages. Since height is commonly measured in centimeters, an alternate calculation formula,ĭividing the weight in kilograms by the height in centimeters squared, and then multiplying the result by 10,000.īMI = weight (kg) / 2 BMI table and chart for adultsįor adults 20 years old and older, BMI is interpreted using standard weight status categories. When using the metric system, the formula for BMI is defined a person's weight in kilograms divided by height in meters squared. Then, the formula for BMI is defined by dividing weight in pounds (lb)īy height in inches (in) squared and multiplying by a conversion factor of 703.īMI = weight (lb) / 2 x 703 With the US/English/Imperial measurement system, ounces and fractions must be changed to decimal values in pounds,Īnd feet and inches must be converted to inches only. How to calculate BMI?īMI is calculated using weight and height only! For children and teens under age 20, BMI is then used to find the correspondingīMI-for-age percentile with age and gender. The percentile ranges show the different weight or stature categories among the peers. Percentile relative to other peers of the same gender and age by the month. Why is BMI interpreted differently for children and teens from adults?įor children and teens, even though BMI is calculated with the same formula like the adults, BMI is interpreted differently, and BMI is age and gender specific.ĭue to quick changes in weight and height with age and gender, as well as their relation to body fatness, BMI among children and teens are expressed as To determine whether the child has excess fat, further assessment by a licensed health professional would be needed. In the meantime, due to limitation in BMI, BMI is not a diagnostic tool. You can find the percentail among infants or toddlers in that specific age. On the other hand, using the WHO standards, There has been little research on what BMIĬalculated from length means in under 2 year olds and on the consequences of high or low BMI in that age. Why is BMI not used in infants or toddlers?įor children under 2 years old, the recumbent length rather than stature is used in the measurements. It is the commonly accepted screening method for classifying adiposity - underweight, healthy weight, overweight, and obesity.īMI does not measure body fat directly or health of an individual, but BMI is moderately correlated with more direct measures of body fat.įurthermore, BMI appears to be as strongly correlated with various metabolic and disease outcome as are these more direct BMI is a measure for indicating nutritional status in children, teens, and adults. Normal weight range: 104.1 lbs - 160.6 lbsīMI, formerly called the Quetelet index, is an anthropometric index of weight and height. Healthy weight range: 108.7 lbs - 159.2 lbs
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