Body fat
The US Navy circumference method. A tape-measure estimate, not a DEXA scan.
Open a calculatorFFMI
Lean mass is weight × (1 − fat%). FFMI is lean mass ÷ height in metres squared. Natural ranges sit roughly 16–25. Tape fat% is noisy. Not a lab figure.
kg
%
cm
FFMI
20.7
Lean mass
65.6
FFMI: 20.7
A Dexascan beats a tape. This is the Navy-style companion, not a steroid test.
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An educational estimate. Not medical, tax or credit advice.