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Body Fat Calculator
Instructions
This body fat calculator uses the U.S. Navy Circumference Method where three/ four body measurements are fed into a fixed formula to estimate the percentage of your body that is made up of fat. Remember that this is only a rough estimate. The measurements need to be accurate to within 0.5cm/ 0.25 inches and should be taken as follows:
Neck: taken below the larynx slightly sloping downward at the front
Waist: women at the smallest point; men at the level of the navel
Hips (women only): at the largest point
These figures are a guide only. The above calculation is a basic guide and does not consider personal factors such as your level of fitness, muscle mass or any other factors. If you have concerns about your weight, please contact your family physican.
Average body fat percentages vary between men and women.
| Body Fat Rating Scale | Women | Men |
| Essential Fat | 10 - 13% | 2 - 5 % |
| Lean (Athlete) | 14 – 20% | 6 – 13% |
| Average (Fitness) | 21 – 24 % | 14 – 17% |
| Acceptable | 25 – 31% | 18 – 25% |
| Obese | ≥32% | ≥26% |