Body Fat Percentage Calculator
Estimate your body fat percentage using the US Navy circumference method — no calipers needed, just a tape measure. See your fat mass, lean mass, and fitness category.
Your measurements US Navy Method
in
Total height in inches (5'10" = 70")lbs
in
Measure at narrowest pointin
Below the larynx, slightly downward—
body fat
—
—
Fat mass
—
Lean mass
—
Ideal body fat
Body fat %—
Fat mass—
Lean mass—
To reach midpoint of fitness range—
FAQs
How is body fat percentage measured without calipers? ›
The US Navy circumference method uses neck, waist, and (for women) hip measurements along with height to estimate body fat. For men: %BF = 86.01 × log10(waist − neck) − 70.041 × log10(height) + 36.76. For women it includes hip measurement. This method has an accuracy of ±3–4% compared to DEXA scans. It's free, requires only a tape measure, and is used by the US military for fitness assessments.
What is a healthy body fat percentage? ›
According to the American Council on Exercise (ACE), for men: essential fat 2–5%, athletes 6–13%, fitness 14–17%, acceptable 18–24%, obese 25%+. For women: essential fat 10–13%, athletes 14–20%, fitness 21–24%, acceptable 25–31%, obese 32%+. Women naturally carry more essential fat due to hormonal needs. These ranges are guidelines — optimal body fat varies by age, individual physiology, and health goals.