Muscle Mass Calculator

Estimate your lean body mass and muscle mass

Imperial (in, lb)

How does the Muscle Mass Calculator work?

This tool helps you estimate your Lean Body Mass (LBM), often used as an indicator of muscle mass, based on your age, gender, height, weight, and body fat percentage.

Enter your age, select your gender, provide your height and weight, then your estimated body fat percentage. Then click 'Calculate My Muscle Mass'.