Health Calculators

Lean Body Mass Calculator

Estimate lean body mass from body weight and body fat percentage.

Body Weight (kg)

Body Fat (%)

Lean Body Mass Formula

Lean Body Mass = Weight × (1 − Body Fat%)

Weight 80 kg and body fat 20% → lean mass = 80 × 0.8 = 64 kg.

Is this the same as muscle mass?

Estimate your body fat percentage using the US Navy method.

Calculate your Body Mass Index (BMI) to check if you are underweight, normal, overweight, or obese.

Calculate your ideal body weight based on height and gender using multiple formulas.