Body fat percentage estimates how much of your body weight is fat versus lean mass. The US Navy method uses circumference measurements as a practical field estimate.
How to use this calculator
- Select your sex.
- Enter height, waist, and neck measurements in centimeters.
- For females, also enter hip measurement.
- Review estimated body fat percentage and category.
Formula
The US Navy method uses logarithmic formulas based on height, waist, neck, and hip (for females) circumferences to estimate body fat percentage.
Example
A male at 175 cm with 85 cm waist and 38 cm neck may show about 18% body fat, in the fitness range.
Frequently asked questions
- Is the Navy method accurate?
- It is a reasonable estimate for many people but less accurate than DEXA or hydrostatic weighing. Measurement technique affects results.
- Why is hip required for females?
- The female Navy formula includes hip circumference because fat distribution differs between sexes.