Body & Health Calculators
BMI, body fat, ideal weight, blood pressure, water intake, height prediction, and more.
16 tools
- Anorexic BMI Calculator BMI with clinical underweight emphasis (educational).
- Army Body Fat Calculator US Army body fat circumference method.
- BAC Calculator Widmark BAC estimate (educational).
- Blood Pressure Category Calculator Map systolic/diastolic readings to AHA-style categories (educational).
- BMI Calculator Body Mass Index from height and weight with category.
- Body Fat Calculator US Navy body fat estimate from measurements.
- Body Surface Area Calculator Mosteller BSA formula.
- Body Type Calculator Simple ectomorph/mesomorph/endomorph heuristic.
- GFR Calculator eGFR CKD-EPI style estimate.
- Healthy Weight Calculator Healthy BMI weight range for your height.
- Height Calculator Predict a child’s adult height from age, weight, and parents’ heights (Khamis–Roche), or use parents-only mid-parental height. Includes a height unit converter.
- Ideal Weight Calculator Ideal body weight formulas (Devine, Robinson).
- Lean Body Mass Calculator Boer lean body mass estimate.
- Overweight Calculator BMI classification including overweight thresholds.
- Sleep Duration by Age Calculator Recommended sleep hours by age group (guideline ranges).
- Water Intake Calculator Daily water target from body weight and activity.