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A person’s ideal weight depends on a number of factors, such as:

Gender
Height
Frame size
Fat and muscle proportion
According to The Centers for Disease Control (CDC), the average weight, height, and waist measurement for American adults age 20 years and older is:

Women
Average weight: 170.5 pounds
Average height: 5 feet, 3.6 inches tall
Average waist measurement: 38.7 inches
Men
Average weight: 197.8 pounds
Average height: 5 feet, 9 inches tall
Average waist measurement: 40.3 inches
Though these are averages, it does not mean these weights are ideal for health. The CDC also found the average American adult’s body mass index (BMI), a calculation based on height and weight that can provide an estimate of total body fat, was 29.6 for women and 29.1 for men, both of which are considered overweight.

How Can BMI Be Used to Determine Ideal Weight?
BMI (body mass index) is a tool doctors use to determine if a person is overweight, and to what degree. BMI is often used to determine ideal weight ranges. In adults, BMI does not correlate to age.

BMI is used slightly differently in children, in that it is calculated the same way as it is for adults, but then the ranges are compared to percentiles for children of the same age and sex.

BMI is calculated from the weight and square of the height:

BMI = body weight (in kg) ÷ height (in meters) squared

BMI less than 18.5: Below normal weight
BMI 18.5 to under 24.9: Normal weight
BMI 25 to under 29.9: Overweight
BMI 30 to under 34.9: Class I Obesity
BMI 35 to under 39.9: Class II Obesity
BMI 40 or greater: Class III Obesity

Height	Weight (based on normal BMI of 19–24)
4’10”	91–115 lbs.
4’11”	94–119 lbs.
5’0″	97–123 lbs.
5’1″	100–127 lbs.
5’2″	104–131 lbs.
5’3″	107–135 lbs.
5’4″	110–140 lbs.
5’5″	114–144 Ibs.
5’6″	118–148 lbs.
5’7″	121–153 lbs.
5’8″	125–158 lbs.
5’9″	128–162 lbs.
5’10”	132–167 lbs.
5’11”	136–172 lbs.
6’0″	140–177 lbs.
6’1″	144–182 lbs.
6’2″	148–186 lbs.
6’3″	152–192 lbs.