Lean Body Mass Calculator
Calculate your lean body mass (fat-free mass) using the Boer, James, and Hume formulas.
Lean Body Mass
Lean Body Mass (LBM) is your total weight minus fat mass. It includes muscle, bone, organs, and water. LBM is useful for calculating calorie needs, protein requirements, and medication dosing. These formulas estimate LBM from height and weight alone; for greater accuracy, consider a DEXA scan or body fat measurement.
About This Tool
The Lean Body Mass Calculator uses the Boer, James, and Hume formulas to estimate lean body mass (LBM), which is essential for assessing muscle health and overall fitness. It's particularly useful for athletes, trainers, and individuals focused on body composition.
Users input their height, weight, and sex; the calculator then applies one of three established formulas to compute LBM. The output provides a precise estimate of fat-free mass in kilograms or pounds.
This tool is ideal for tracking muscle growth over time without any need for personal data storage or account creation.