What the tool does, how to run it, and what to expect from the result.
Lean body mass is weight minus fat: muscle, bone, organs and water. Boer (1984), men: 0.407 × weight kg + 0.267 × height cm − 19.2; women: 0.252 × weight + 0.473 × height − 48.3. For 178 cm and 80 kg that is 32.56 + 47.53 − 19.2 = 60.9 kg, about 76% of body weight. Protein targets and some drug doses use LBM.
A quick way to understand who this helps, what it solves, and where it connects next.
Anyone tracking fitness or health numbers, plus students and clinicians double-checking a formula.
Using the lean body mass calculator without installing anything or signing up.
Short answers for the questions people usually have before trying a utility like this.
They assume typical build. Very muscular or very lean people get underestimates. DEXA or bioimpedance measure it directly.
No. Skeletal muscle is roughly half of lean mass; the rest is bone, organs, skin and water.
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Enter your numbers and the result updates live in your browser. Nothing is uploaded and no server is used.
Calculations run locally in your browser. An estimate for general guidance, not medical advice.