Lean Body Mass Calculator

June 8, 2026

This Lean Body Mass Calculator helps you estimate your Lean Body Mass (LBM), which is the weight of your body excluding fat.

LEAN BODY MASS CALCULATOR

Lean Body Mass Formula (Boer Formula)

For men:
LBM = 0.407 × weight (kg) + 0.267 × height (cm) − 19.2

For women:
LBM = 0.252 × weight (kg) + 0.473 × height (cm) − 48.3

Parameters Explained

Weight: total body weight measured in kilograms or pounds
Height: body height measured in centimeters or feet and inches
Gender: used to adjust the calculation

How It Works

The calculator uses your height, weight, and gender to estimate lean body mass, which includes muscles, bones, organs, and water, excluding body fat.

Ethan Caldwell

Ethan builds the interactive health calculators on Height Growth Blog. Based in Denver, Colorado, he combines a software engineering background with a focus on evidence-based health tech, turning dense clinical guidelines — from CDC growth charts to NIH/IOM dietary references — into tools parents and teens can use in under a minute. Every calculator on the site, from BMI Percentile to Body Fat and Calcium Intake, is built directly from primary sources (NIH, AAP, CDC, Mayo Clinic) and cross-checked against peer-reviewed studies before launch.