🐷 Body Fat Calculator
Calculate body fat from weight and lean mass
Calculator
Body Fat Percentage: -
Formula: (Weight - Lean Body Mass) / Weight × 100
Note
Features
Automatically calculates body fat percentage from your weight and lean body mass (LBM). Use values measured by body composition analyzers to get accurate body fat percentage.
How to Use
Enter your weight (kg) and lean body mass (kg) to instantly see your body fat percentage. Lean body mass can be measured using body composition analyzers or InBody devices. If you don't know your lean body mass, consider using the BMI calculator instead.
Use Cases
Verify measurements after using gym body composition analyzers, track diet and workout progress, monitor muscle mass changes through lean body mass trends, and set body fat percentage goals.
FAQ
Q: What is Lean Body Mass (LBM)? A: The weight of everything in your body except fat—muscles, bones, organs, and water. Q: How do I measure lean body mass? A: Body composition analyzers (like InBody) measure this. They're commonly available at gyms and health facilities. Advanced home scales can also measure it. Q: What's a healthy body fat percentage? A: For men, 10-20% is standard; for women, 20-30%. Athletes may have lower values. Q: What's the difference between BMI and body fat percentage? A: BMI only uses height and weight, not distinguishing between muscle and fat. Body fat percentage shows actual fat proportion, enabling more accurate body composition assessment. Q: How can I increase lean body mass? A: Strength training and adequate protein intake are effective. Increasing muscle mass raises lean body mass and boosts basal metabolism.
Tips
Body fat percentage can vary greatly at the same weight. For example, at 70kg with 63kg lean body mass, body fat is 10%, but with 56kg lean body mass, it's 20%. Bodybuilders may drop below 5% body fat, but this is temporary for competitions. Some body fat is essential for healthy living. Fat isn't just 'excess'—it plays crucial roles in hormone production and temperature regulation.