Body fat and body composition calculators

Body composition separates fat from lean mass, which BMI cannot do. These calculators estimate body fat from simple tape measurements and show lean mass, fat-free mass index and body surface area.

6 free calculators

• Body Fat Percentage Calculator - US Navy tape method with fat mass and lean mass. Also called: body fat percentage calculator, US Navy body fat calculator, body fat estimator.
• Lean Body Mass Calculator - Boer, James and Hume estimates of lean mass. Also called: LBM calculator, lean mass calculator, fat-free mass calculator.
• Body Surface Area (BSA) Calculator - Mosteller, DuBois, Haycock and Gehan-George formulas. Also called: BSA calculator, Mosteller calculator, DuBois BSA calculator.
• Relative Fat Mass (RFM) Calculator - Body fat estimate from height and waist only. Also called: RFM calculator, relative fat mass index, RFM body fat.
• Army Body Fat Calculator - Tape test with age-based pass/fail standards. Also called: army tape test calculator, military body fat calculator, army body composition calculator.
• FFMI Calculator - Fat-free mass index and muscle potential. Also called: fat-free mass index calculator, FFMI natural limit, normalized FFMI calculator.

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These calculators are for education only and are not medical advice. See the medical disclaimer and how we build and review our tools. Looking for medicine prices? Compare medicine prices in 32 countries on MediHub.