This calculator provides an estimate of body fat percentage using two established methods: the US Navy formula and BMI-based calculations. It's designed for individuals looking to monitor their body composition as part of fitness or weight management goals. By inputting basic measurements like age, height, weight, and circumferences, users receive an approximation of their body fat percentage along with related metrics.

US Navy Method: Uses neck, waist, and hip measurements to compute body fat based on research from the Naval Health Research Center, offering a more tailored estimate than weight alone.

BMI Method: Incorporates Body Mass Index with age to derive body fat percentage, providing an alternative calculation for those without circumference data.

Detailed Results: Displays body fat category, fat mass, lean body mass, ideal body fat for age, and weight to lose for reaching ideal levels.

Free Access: No cost or registration required, making it accessible for regular health tracking.

Health Context: Includes reference tables from organizations like the American Council on Exercise to help interpret results in terms of essential fat, athlete ranges, and obesity risks.