Body Fat Calculator
Your measurements
cm
cm
cm
Your result
Body fat percentage
11.1 %
Category
Athletes
Body fat categories
- Below Essential Fat
- < 2%
- Essential Fat
- 2–5.9%
- Athletes
- 6–13.9%
- Fitness
- 14–17.9%
- Average
- 18–24.9%
- Obese
- 25%+
About the Body Fat Calculator
Estimate your body fat percentage from a few tape-measure readings with the U.S. Navy circumference method. Enter your height, neck and waist, plus hips for women, in centimeters to see your percentage and its fitness category.
How to use it
- 1 Choose Male or Female. The Hip field appears for women.
- 2 Enter your Height, Neck and Waist measurements in centimeters.
- 3 Women: also enter your Hip measurement at its widest point.
- 4 Read your Body fat percentage and Category, and compare them with the Body fat categories table.
Frequently asked questions
For men: 495 ÷ (1.0324 − 0.19077 × log10(waist − neck) + 0.15456 × log10(height)) − 450. For women, waist + hip − neck replaces waist − neck, and the constants are 1.29579, 0.35004 and 0.22100. All measurements are in centimeters.
Measure the neck just below the larynx, the waist at the navel for men or at its narrowest point for women, and the hips at their widest. Keep the tape level and snug without pressing into the skin.
The categories follow the American Council on Exercise ranges. For men, 14–17.9% is fitness and 18–24.9% is average; for women, 21–24.9% is fitness and 25–31.9% is average. Essential fat is 2–5.9% for men and 10–13.9% for women, and anything lower is shown as below essential fat.
No, this calculator takes centimeters only. Multiply inches by 2.54 to convert: a 34-inch waist is 86.4 cm.