BMI (body mass index) is an age- and sex-specific measurement that ranks you as underweight, normal weight, overweight, or obese. BMI is used to measure body fat percentage. The body fat percentage is very important when understanding your weight. While you may be considered overweight, you might have a low body fat percentage, meaning that you have more muscle than fat and are in a healthy body fat range.
Step 1
Prepare to calculate with pencil and paper or with a calculator.
Step 2
Calculate your BMI by dividing your weight over the square of your height.
Step 3
Enter your BMI score into this equation to determine your body fat percentage: (1.2 x BMI) + (.23 x age) - (10.8 x 1 for men, 0 for women) - 5.4.
Step 4
Record your results.
Tips and Warnings
- Calculate the equation twice to validate your results. Based on your calculations you may choose to diet or exercise. If you have a high body fat percentage, then lower your caloric intake by eating fruits, vegetables, whole grains and lean protein. Refrain from drinking soda, coffee and juice, and increase your water consumption.
- Please consult your physician prior to beginning a new diet or exercise regimen.
Things You'll Need
- Pencil
- Paper
- Calculator
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