Body Composition Calculators
Free, science-backed tools to assess and track your body composition - from BMI and body fat percentage to ideal weight ranges, army standards, and recomposition planning.
BMI Calculator
Calculate your Body Mass Index using the WHO standard formula. Instantly see your weight category and healthy weight range.
Body Fat Calculator
Calculate body fat percentage using the U.S. Navy circumference method. Includes ACSM category classification.
Ideal Weight Calculator
Find your ideal body weight using four validated formulas: Hamwi, Devine, Robinson, and Miller.
Lean Body Mass Calculator
Calculate your lean body mass vs fat mass from your weight and body fat %. Visual bar chart breakdown.
Army Body Fat Calculator
US Army AR 600-9 body fat standards. Check PASS/FAIL status by age group, gender, and rank requirements.
Body Recomposition Calculator
Calculate fat to lose, lean mass to maintain, target weight, estimated timeline, and calorie cycling strategy.
Body Type Quiz
10-question quiz to identify your somatotype: ectomorph, mesomorph, or endomorph. Get training & nutrition plans.