Estimate body fat percentage using the US Navy method (recommended). Works with Metric and Imperial units. Enter circumferences carefully — measure snugly but not compressing skin.
Tip: use the Navy method for better accuracy when circumferences are measured correctly.
Body Fat %
0%
Fat Mass
0 kg
Lean Mass
This Body Fat Calculator estimates your body fat percentage using trusted methods like the US Navy formula and a BMI-based option for quick reference. Enter your gender, age, weight, height, and circumference measurements (neck, waist, and hip for females) to get an instant estimate of body fat %, fat mass, and lean mass. The tool also provides a simple category (e.g., Athlete, Fitness, Average, Obese) and BMI for context, helping users understand their body composition and plan fitness or nutrition goals more effectively. Results are estimates — for clinical accuracy, consider professional methods such as DEXA or caliper testing.