Body Fat % Calculator (US Navy Method)
Tape-measure body fat % using the US Navy circumference formula — no calipers needed.
Inputs
cm
kg
cm
cm
Result
Body fat
— %
Category
—
Fat mass
— kg
Lean mass
— kg
FFMI
—
Measure relaxed, after exhale. The Navy formula is accurate within ~3% for most adults — DEXA is the gold standard.
For Research Purposes Only.Not medical advice. Body-fat reading is an estimate, not a diagnosis.