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How to Calculate Ideal Body Weight Percent

author image Linda Tarr Kent
Linda Tarr Kent is a reporter and editor with more than 20 years experience at Gannett Company Inc., The McClatchy Company, Sound Publishing Inc., Mach Publishing, MomFit The Movement and other companies. Her area of expertise is health and fitness. She is a Bosu fitness and stand-up paddle surfing instructor. Kent holds a bachelor's degree in journalism from Washington State University.
How to Calculate Ideal Body Weight Percent
A measuring tape on a bathroom scale. Photo Credit: FotoCuisinette/iStock/Getty Images

The body mass index is used to gain an idea of the amount of body fat that you have based on your height and weight. It’s used to screen for weight categories that can lead to health problems, according to the Centers for Disease Control. A BMI of 18.5 to 24.9 is considered the healthy range. You have the lowest risk for health issues like diabetes, heart disease and some cancers if your BMI falls between 21 and 25, according to the University of Maryland Medical Center. Calculate your ideal BMI with a simple and straightforward process that you can conduct at home.

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Step 1

Find your existing BMI. Multiply your weight by 705. Divide that number by your height in inches. Divide the result by your height in inches again. If you fall into the healthy BMI range of 18.5 to 24.9 you are finished.

Step 2

To seek your “ideal” weight, multiply your height in inches by 24. Multiply the result by your height in inches again. Divide this number by 705. This will give you a number that is near the top of your healthy weight range. However, keep in mind that your top healthy weight can be higher than the BMI standards, such as if you are an athlete. Your amount of physical activity, genetics and eating and lifestyle choices are more important than the number on the scale in determining the weight that’s right for you, says Sheri Barke of the University of California Los Angeles Student Nutrition and Body Image Action Committee.

Step 3

Multiply your height in inches by 18.5. Multiply the result by your height in inches again. Divide by 705. This is your lowest healthy weight. Set a weight goal that falls between your lowest healthy weight and your top healthy weight.

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