Body fat
Body-fat percentage using the US Navy circumference method — a tape-measure estimate, not a DEXA scan.
Open calculatorFFMI (Fat-Free Mass Index)
Lean mass = weight × (1 − body-fat %). FFMI = lean mass ÷ height in metres squared. Unlike standard BMI, FFMI measures muscularity independently of body fat.
kg
%
cm
FFMI
20.7
Lean body mass (LBM)
65.6
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Natural FFMI values in trained adults typically range from 18 to 25 in men and 14 to 20 in women. A DEXA scan is more accurate than a tape-measure body-fat estimate.
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Educational estimate only. Not medical, tax, legal or financial advice.