Body composition calculators
Body composition calculators — 2 tools, each showing the formula it uses, the source that published it, and the date that source was last checked.
Lean body mass calculator
A lean body mass calculator estimates how much of your weight is not fat, from your height, weight and sex. It runs the Boer, James and Hume equations together rather than picking one, because at 80 kilograms and 180 centimetres they land 4.93 kilograms apart, and that spread is the honest answer.
Body fat calculator
A body fat calculator estimates what share of your weight is fat. This one runs the Hodgdon and Beckett tape method from your neck, waist and hip measurements and the Deurenberg BMI equation, shows each with the error band its own paper reports, and adds your waist to height ratio with the NICE bands.
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