Body Fat Calculator
Estimate body fat percentage using the Navy Method with tape measurements.
About this Calculator
The US Navy body fat method uses simple circumference measurements to estimate body fat percentage — no calipers or DEXA scan required. For men: neck, waist, and height. For women: neck, waist, hip, and height. The results categorize you into military fitness categories and provide lean mass vs. fat mass breakdown. While not as precise as laboratory methods, the Navy method is validated, reproducible, and useful for tracking changes over time.
body fatNavy methodbody fat percentagelean massfat masscircumference