Lean Body Mass Calculator
The Lean Body Mass Calculator gives out the estimated Lean Body Mass (LBM) based on body weight, height, gender, and age. The Lean Body Mass Calculator provides the results of all the popular formulas for comparison purposes.
Age  
Gender 
Height  feet inchs 
Weight  pounds 
Height  centimeters 
Weight  kilograms 
Result
Reference
The Lean Body Mass (LBM) is a part of the body. It is normally defined to be the body weight minus the body fat. Typically lean body mass is 6090% of the total body mass. Normally, men have higher port of lean body mass than women. Some anaesthetic agents dosage, especially watersoluble drugs, are routinely based on the lean body mass value. Many formulas have been developed in the past for the estimation of the lean body mass. The following are some of them. This calculator gives out result for all the fitting formulas.
Lean Body Mass Formula for Adults
The Boer Formula:

Men: eLBM = 0.407weight(kg) + 0.267height(cm)  19.2
Women: eLBM = 0.252weight(kg) + 0.473height(cm)  48.3
Boer P. "Estimated lean body mass as an index for normalization of body fluid volumes in man." Am J Physiol 1984; 247: F6325
The James Formula:

Men: eLBM = 1.1weight(kg)  128(weight(kg)/height(cm))^{2}
Women: eLBM = 1.07weight(kg)  148(weight(kg)/height(cm))^{2}
Absalom AR, Mani V, DeSmet T,et al. "Pharmacokinetic models for propofoldefining and illuminating the devil in the detail." Br J Anaesth 2009; 103:2637
The Hume Formula:

Men: eLBM = 0.32810weight(kg) + 0.33929height(cm)  29.5336
Women: eLBM = 0.29569weight(kg) + 0.41813height(cm)  43.2933
Hume, R "Prediction of lean body mass from height and weight.". J Clin Pathol. 1966 Jul; 19(4):38991.
Lean Body Mass Formula for Children
The Peters Formula:
The author suggested that this formula fit for children of 1314 years old or younger.
eECV = 0.0215weight(kg)^{0.6469}height(cm)^{0.7236}eLBM = 3.8eECV
A. M. Peters, H. L. R. Snelling, D. M. Glass, N. J. Bird "Estimation of lean body mass in children". British Journal of Anaesthesia1 06(5): 71923 (2011).