Body Fat Calculator
US Navy Method · BMI Estimate · Body Composition Breakdown
Personal Measurements
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Body Circumference Measurements (US Navy Method)
How to measure: Neck: below the larynx (Adam's apple), sloping slightly downward.   Waist: at the narrowest point (belly button level for males).   Hips: at the widest point (females only).
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Body Fat Percentage Scale
BF%
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Body Fat Category
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Fat mass: —
Lean mass: —
Ideal BF% range: —
Method: US Navy + BMI estimate
Body Fat Assessment
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Body Composition at Your Weight
Fat
Lean
Body Fat
Lean Mass (muscle, bone, water, organs)
Your Body Composition
Body Fat %
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Category
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Fat Mass
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Lean Body Mass
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Ideal BF% (midpoint)
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Fat to Lose (to ideal)
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BMI (estimated)
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Waist-to-Height Ratio
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Weight Breakdown
Body Fat % Classification
CategoryMen BF%Women BF%Your Status
Health Insights
US Navy Method (men): BF% = 495÷(1.0324−0.19077×log10(waist−neck)+0.15456×log10(height))−450. Women: BF% = 495÷(1.29579−0.35004×log10(waist+hip−neck)+0.22100×log10(height))−450. BMI method (Deurenberg): BF% = (1.2×BMI)+(0.23×age)−(10.8×sex)−5.4 where sex=1 male, 0 female. Results are estimates — clinical DEXA scan is the gold standard. Not medical advice.