Question 1

What is lean body mass?

Accepted Answer

Lean body mass (LBM) is your total body weight minus body fat. It includes muscles, bones, organs, and water. It's a key indicator of fitness and metabolic health.

Question 2

How do I calculate lean body mass?

Accepted Answer

Enter your weight, height, and optionally waist/neck/hip measurements. Our calculator uses the US Navy method (most accurate) or height/weight estimate to find your LBM and body fat percentage.

Question 3

What is a good lean body mass percentage?

Accepted Answer

For men: 60-80% LBM (20-40% body fat) is healthy. For women: 50-70% LBM (30-50% body fat) is healthy. Athletes typically have higher LBM percentages.

Question 4

Why is lean body mass important?

Accepted Answer

LBM determines your metabolic rate (muscle burns more calories than fat), affects strength and endurance, and is a better health indicator than weight alone.

Question 5

How do I increase lean body mass?

Accepted Answer

Increase LBM through resistance training (weight lifting), adequate protein intake (0.7-1g per lb), progressive overload, and sufficient rest for recovery.

Lean Body Mass Calculator

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