Body Composition Calculator

  • Jeans Size Calculator
    Find your jeans size from waist and inseam measurements. Get your W x L (US/UK) plus the approximate EU waist size in inches or centimeters.
  • Jacket Size Calculator
    Convert your chest measurement to a US/UK and EU jacket size. Enter chest in inches or cm to find your suit, blazer, or coat size instantly.
  • Hat Size Calculator
    Convert your head circumference (inches or cm) into a US fitted hat size and EU size instantly. US size = circumference ÷ π, rounded to 1/8.
  • Dress Size Calculator
    Estimate your dress size from bust, waist and hip measurements. Get approximate US, UK and EU sizes in inches or centimeters instantly.
  • Glove Size Calculator
    Find your glove size from your hand circumference in inches or cm. Get numeric and letter (XS–XXL) sizes instantly with this free calculator.
  • Adjusted Body Weight Calculator
    Calculate Adjusted Body Weight (ABW) quickly and accurately. Ideal for medical and nutritional use, this tool helps adjust dosages and dietary needs.
  • Army Height and Weight Calculator (AR 600-9 Screening)
    US Army AR 600-9 height and weight calculator. Check if your weight is within the screening limit for your height, age, and sex, and see your margin.
  • Army Body Fat Calculator (US)
    Estimate body fat with the US Army AR 600-9 ABCP tape method. Enter height, neck, abdomen (men) or waist & hip (women) in inches.
  • Dog Size Calculator
    Estimate your puppy's adult weight and size category (small, medium, large) from current weight and age in weeks. Free, fast puppy growth estimator.
  • BMI to Weight Conversion Calculator
    Back-calculate body weight from a target BMI and height. Enter a BMI and height in cm to get the matching weight in kg/lb, plus a full height-vs-weight table.
  • Jackson-Pollock Caliper Body Fat Calculator
    Estimate body fat percentage from 3 skinfold caliper measurements using the Jackson-Pollock equations and the Siri density conversion. Free and universal.
  • Waist-to-Hip Ratio (Apple vs Pear Body Type) Calculator
    Compute your waist-to-hip ratio (WHR) from waist and hip circumference and find out whether your body is apple-shaped or pear-shaped, using sex-specific thresholds.
  • Total Body Water Calculator
    Estimate your total body water (TBW) in liters from your weight and gender using the simple percentage-of-body-weight method.
  • Pediatric Blood Volume Calculator
    Estimate pediatric blood volume (EBV) from body weight using age-based mL/kg factors for premature neonates, infants, children and adolescents.
  • Geriatric BMI Calculator
    Calculate BMI for older adults using elderly-adjusted ranges where a normal healthy BMI is 23–30 kg/m². Enter weight and height to classify.
  • Overweight Calculator
    Calculate how many kilograms you are above the upper-normal weight (BMI 25) for your height, plus your current BMI.
  • Gastric Sleeve Weight Loss Calculator
    Estimate weight loss after gastric sleeve surgery from your current weight, ideal weight and expected % excess weight loss (%EWL). Free, instant.
  • U.S. Navy Body Fat Calculator
    Estimate body fat percentage with the U.S. Navy circumference method using height, neck, waist (and hip for women) in inches.
  • Waist to Height Ratio Calculator
    Calculate your waist-to-height ratio (WHtR) instantly. Enter waist and height in cm or inches to gauge central fat and health risk. Free WHtR tool.
  • Weight Loss Percentage Calculator
    Calculate what percentage of body weight you've lost. Enter your starting and current weight to see your weight loss percentage instantly.
  • Skinfold Body Fat Calculator
    Estimate body fat percentage from 3 skinfold measurements using the Jackson-Pollock equations for men and women. Free, instant results.
  • Ponderal Index Calculator
    Calculate your Ponderal Index (PI) from body mass and height using PI = kg / m³. A height-adjusted body composition index, useful for tall or short people.
  • ABSI (A Body Shape Index) Calculator
    Calculate your ABSI (A Body Shape Index) from waist, height and weight. Estimates abdominal fat risk independent of BMI. Free and instant.
  • Fat-Free Mass Index (FFMI) Calculator
    Calculate your Fat-Free Mass Index (FFMI) and normalized FFMI from weight, height, and body fat percentage to gauge muscle mass.

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