Calcula tu masa corporal magra usando las fórmulas de Boer, James y Hume.
Lean body mass (LBM) is your total weight minus fat — it includes muscle, bone, organs, and water. This calculator uses three validated formulas (Boer, James, Hume) and averages them for a more reliable estimate.
Three formulas compared
Boer, James, and Hume results side by side.
Body fat estimate
Derived from weight minus lean mass.
Averaged result
Averages all three for a balanced estimate.
Metric & imperial
Full dual-unit support.
Calorie Calculator
Calculate daily calorie needs based on your stats and activity level
Body Fat Calculator
Estimate body fat percentage using the U.S. Navy method
BMR Calculator
Calculate your Basal Metabolic Rate with Mifflin-St Jeor and Harris-Benedict
BMI Calculator
Calculate your Body Mass Index and weight classification
Ideal Weight Calculator
Find your ideal body weight using Devine, Robinson, Miller, and Hamwi formulas
Pace Calculator
Calculate running pace, time, or distance for training and races