Body Fat Calculator
Estimate your body fat percentage using the US Navy circumference method. See your category, body composition breakdown, and Fat-Free Mass Index (FFMI).
Body Fat
17.0%
cm
120cm220cm
kg
30kg200kg
cm
25cm55cm
cm
50cm150cm
Body Fat %
17.0%
Average
Where you sit
Fat mass
14 kg
Lean mass
66 kg
Category
Average
Male: Essential 2–5% · Athletes 6–13% · Fitness 14–17% · Average 18–24% · Obese 25%+
Fat-Free Mass Index (FFMI)
FFMI
21.7
Adjusted FFMI
22.0
Above average
US Navy method (Hodgdon & Beckett, 1984): Uses circumference measurements to estimate body fat. Standard error of ±3–4% compared to DEXA scans. Less accurate at extremes (very lean or very high body fat). For clinical accuracy, consider a DEXA scan.