### What is Lean Body Mass?

- Lean Body Mass or LBM is the difference between your body weight and body fat. So, Lean Body Mass (LBM) shares a crucial part of your body. Calculation of Lean Body Mass is needed as the ratio of Lean Body Mass and total body mass is used to prescribe dosage for some useful medicines. Normally, Lean Body Mass of a healthy person shares 60 to 90 percent of the total body mass.
### Boer Formula for Lean Body Mass (LBM)

- The Boer formula to calculate the Lean Body Mass is:
Male 0.407weight(kg) + 0.267height(cm) – 19.2 Female 0.252weight(kg) + 0.473height(cm) – 48.3 ### James Formula for Lean Body Mass (LBM)

- To estimate the Lean Body Mass using the James formula, see the following table:
Male 1.1weight(kg) – 128(weight(kg)/height(cm)) ^{2}Female 1.07weight(kg) – 148(weight(kg)/height(cm)) ^{2} ### Hume Formula for Lean Body Mass (LBM)

- Use these formulas to estimate the Lean Body Mass using the Hume formula.
Male 0.32810weight(kg) + 0.33929height(cm) – 29.5336 Female 0.29569weight(kg) + 0.41813height(cm) – 43.2933 ### Peters Formula for Lean Body Mass (LBM)

- 3.8 x ECV. Where, ECV = 0.0215weight(kg)
^{0.6469}height(cm)^{0.7236}

The Peters formula is used only to determine the Lean Body Mass for children (up to 14 years of age) only.