Body Fat Calculator

About This Tool

Your body fat percentage is a much better indicator of overall fitness than weight alone. The US Navy Body Fat Calculator provides a reliable estimate of your body composition without the need for expensive DEXA scans or calipers. By simply measuring the circumference of your neck, waist, and hips (for women), this tool calculates the proportion of your weight that is fat vs. lean mass. Tracking this metric helps you ensure that you are losing fat, not muscle, during a weight loss program. Understanding your body metrics is the first step toward achieving your health and fitness goals. This calculator uses scientifically validated formulas endorsed by health organizations worldwide, ensuring accuracy you can trust. The results provide personalized insights that help you make informed decisions about your diet, exercise routine, and lifestyle choices. Whether you're trying to lose weight, build muscle, or simply maintain a healthy lifestyle, this tool gives you the data-driven guidance you need. It's perfect for fitness enthusiasts, athletes, nutritionists, and anyone committed to improving their health through measurable, evidence-based approaches. Our algorithms are optimized for performance, ensuring instant results even for complex calculations. We are committed to providing free, high-quality tools to help you be more productive.