Your ideal weight lies within a range that depends on your height. A physician can recommend a more specific weight based on a physical examination. The calculation of your ideal weight range requires you to consult a table of body mass index values, also known as BMI values. Dr. Stephen B. Halls provides weight classifications of BMI values by gender. These BMI values are modifications of the BMI values published by the World Health Organization, which uses the same BMI values for both genders.
Step 1
Convert the normal BMI range to English units of measure for women. The BMI values from Dr. Halls specify that women should have a BMI between 19.1 and 25.8 kg/m^2. Convert these values to English units of measure by dividing by the conversion factor of 703. This provides a BMI range from 0.0272 lb/in^2 to 0.0367 lb/in^2.
Step 2
Derive an equation that expresses weight in terms of BMI and height. The BMI is defined as weight / (height x height), so weight = (height x height) x BMI. Substitute the BMI values from step 1 into this equation to show that the ideal weight for women should be between [height x height x 0.0272] pounds and [height x height x 0.0367] pounds where height is in inches.
Step 3
Obtain your height in inches with a tape measure. Assume your height is 63 in. for this example.
Step 4
Compute your minimum weight with this formula from step 2: weight = [height x height x 0.0272] pounds. This example assumes your height is 63 in., so your minimum weight is [63 x 63 x 0.0272] = 108 lb.
Step 5
Calculate your maximum weight with this formula from step 2: weight = [height x height x 0.0367] pounds. This example assumes your height is 63 in., so your maximum weight is [63 x 63 x 0.0367] = 146 lb.
Things You'll Need
- Tape measure
- Calculator
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