Your ideal body weight depends on a variety of factors which a physician must evaluate. However, you can estimate a range for your ideal body weight from your height. This calculation requires you to use standard body mass index, or BMI, values to establish equations that provide your ideal body weight range from your height. Dr. Steven B. Halls offers a range of normal BMI values for each gender.
Ideal Weight Range for Men
Step 1
Divide BMI values in metric units by 703 to convert them to English units. The BMI values from Hall show your normal BMI range is between 20.7 and 26.4 kg/m^2. This is equivalent to BMI values between 0.0294 lb/in^2 and 0.0376 lb/in^2.
Step 2
Express your weight in terms of your height. BMI = [Weight / (Height × Height)] by definition, which is equivalent to the equation Weight = BMI x Height × Height.
Step 3
Substitute the BMI values for the normal range into the equation Weight = BMI x Height × Height. The normal BMI range of 0.0294 lb/in^2 to 0.0376 lb/in^2 provides a normal weight range between [0.0294 x Height × Height] pounds and [0.0376 x Height × Height] pounds.
Step 4
Measure your height in inches with a tape measure. Assume your height is 69 inches in this example.
Step 5
Calculate your minimum ideal weight with the equation Weight = [0.0294 x Height × Height] pounds. Calculate your maximum ideal weight with the equation Weight = [0.0376 x Height × Height] pounds.
Your height is 69 inches in this example so your minimum weight is [0.0294 x 69 × 69] = 140 pounds and your maximum weight is [0.0376 x 69 × 69] = 179 pounds.
Ideal Weight Range for Women
Step 1
Divide BMI values in metric units by 703 to convert them to English units. The BMI values from Hall show your normal BMI range is between 19.1 and 25.8 kg/m^2. This is equivalent to BMI values between 0.0272 lb/in^2 and 0.0367 lb/in^2.
Step 2
Express your weight in terms of your height. BMI = [Weight / (Height × Height)] by definition, which is equivalent to the equation Weight = BMI x Height × Height.
Step 3
Substitute the BMI values for the normal range into the equation Weight = BMI x Height × Height. The normal BMI range of 0.0272 lb/in^2 to 0.0367 lb/in^2 provides a normal weight range between [0.0272 x Height × Height] pounds and [0.0367 x Height × Height] pounds.
Step 4
Measure your height in inches with a tape measure. Assume your height is 65 inches in this example.
Step 5
Calculate your minimum ideal weight with the equation Weight = [0.0272 x Height × Height] pounds. Calculate your maximum ideal weight with the equation Weight = [0.0367 x Height × Height] pounds.
Your height is 65 inches in this example so your minimum weight is [0.0272 x 65 × 65] = 115 pounds and your maximum weight is [0.0367 x 65 × 65] = 155 pounds.
Things You'll Need
- Calculator
- Tape measure
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