Body Fat Calculator
cm
kg
cm
cm
yrs
--%
--
Essential
Athletic
Fitness
Average
Obese
US Navy Method
--%
BMI Method
-- kg
Lean Mass
-- kg
Fat Mass
--%
Body Fat
--%
Lean Mass (muscle, bone, water)
How it works: The US Navy method uses circumference measurements (waist, neck, hip for women) with a logarithmic formula validated by the US military. The BMI-based method uses the Deurenberg formula: BF% = (1.20 × BMI) + (0.23 × Age) − (10.8 × sex) − 5.4. Results are averaged for the displayed figure. These are estimates — DEXA scan is the gold standard.
Body Fat Categories
| Category | Men | Women |
|---|---|---|
| Essential Fat | 2–5% | 10–13% |
| Athletes | 6–13% | 14–20% |
| Fitness | 14–17% | 21–24% |
| Average | 18–24% | 25–31% |
| Obese | 25%+ | 32%+ |