Body Fat Calculator
Estimate your body fat percentage using the US Navy method. Enter measurements to see fat mass, lean mass, and fitness category.
Body Fat
17.4%
Fitness
Fat Mass
30.5 lbs
Lean Mass
144.5 lbs
Body Fat Categories (Men)
Essential Fat2-5%
Athletic6-13%
Fitness14-17%
Average18-24%
Above Average25%+
Frequently Asked Questions
How does the US Navy method work?+
The US Navy body fat formula uses circumference measurements (waist, neck, and hip for women) combined with height to estimate body fat percentage. It's reasonably accurate for most people and doesn't require specialized equipment.
How do I measure correctly?+
Waist: measure at the narrowest point (belly button level for men). Neck: measure just below the Adam's apple. Hip (women only): measure at the widest point. Use a soft measuring tape, keep it snug but not compressed, and measure in the morning.
What is a healthy body fat percentage?+
For men: 10-20% is considered fit, with athletes at 6-13%. For women: 18-28% is fit, with athletes at 14-20%. Essential fat minimums are ~2-5% for men and ~10-13% for women.