Estimate your body fat % using the US Navy circumference method — no gym equipment needed
⚠️ Estimates only. For clinical-grade accuracy, use DEXA scanning. Not medical advice — consult a healthcare professional before making health decisions.
For men, 8–19% is considered fit to healthy. For women, 21–33% is the healthy range. Athletes often carry 6–13% (men) or 14–20% (women). Levels above 25% (men) or 32% (women) are classified as obese.
The US Navy circumference method is accurate to within about 3–4% of DEXA scan results for most people. It is less accurate for very lean athletes or those with high visceral fat. DEXA or hydrostatic weighing are more precise for clinical use.
Men need waist and neck circumferences. Women need waist, neck, and hip circumferences. Use a flexible tape measure and measure at the same time each day for consistency — ideally first thing in the morning.
Lean body mass (LBM) is everything in your body that is not fat — muscles, bones, organs, water, and connective tissue. It equals total body weight minus fat mass and is a key indicator of metabolic health.