Advanced Composition · Navy & BMI Methods

Body Fat Calculator

U.S. Navy method + BMI estimation · body fat percentage, lean mass, ideal targets & ACE categories

🔬 Body Composition Measurements

📏 US Units (in / lbs)
🌍 Metric Units (cm / kg)
Gender
Age years
Weight lbs
Height ft in
Neck inches(below larynx)
Waist inches(navel level for men / narrowest for women)
Hip (women only) inches(largest horizontal measure)
Gender
Age years
Weight kg
Height cm
Neck cm
Waist cm
Hip (women only) cm

📋 Body Fat Categories (ACE)

👨 Men

Essential: 2-5%
Athletes: 6-13%
Fitness: 14-17%
Average: 18-24%
Obese: ≥25%

👩 Women

Essential: 10-13%
Athletes: 14-20%
Fitness: 21-24%
Average: 25-31%
Obese: ≥32%