Estimate your body fat percentage using the US Navy circumference method (height, neck, waist, and hip for women)
This body fat calculator uses the US Navy circumference method, which estimates body fat percentage using simple tape measurements. The formula was developed by the US Navy and uses height, neck circumference, waist circumference, and hip circumference (for women). It is one of the most practical and accessible methods for estimating body composition.
The US Navy method has an accuracy of about ±3% compared to hydrostatic weighing (underwater weighing), making it one of the most accurate circumference-based methods. Accuracy depends on taking measurements at the correct anatomical landmarks.
For men, essential fat is 2-5%, athletes typically range 6-13%, fitness 14-17%, average 18-24%, and above 25% is considered obese. For women, essential fat is 10-13%, athletes 14-20%, fitness 21-24%, average 25-31%, and above 32% is considered obese.