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.
Read about other more accurate techniques to estimate body fat.
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% |
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 physician.
Body Fat Calculator Instructions
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
2 Comments on "Body Fat Calculator"
Frustrating.. No matter what I do it always says “invalid height”. Well excuse me, but my height is VERY valid!
Ms. Lady Devilish , if you are let’s say 5′ ,you have to multiply 5×12 =60 .Because if you are using inches, there is 12 inches in 1 foot. Hope it helps.Bec.that’s what I did and it take it.Good luck.