BMI Calculator
Estimate body mass index from height and weight to understand general weight categories.
Health tools
Calculators for body metrics and nutrition
Evidence-informed calculators to support learning — not to replace clinical judgment or personalized medical advice.
These calculators are for educational purposes only and are not a substitute for professional medical advice, diagnosis, or treatment. Read our medical disclaimer.
Body metrics
Body metrics
Ideal Weight Calculator
See a healthy weight range for your height using common clinical formulas.
Nutrition
Nutrition
Calorie / TDEE Calculator
Estimate daily calorie needs based on age, sex, weight, height, and activity level.
Macro Calculator
Split daily calories into protein, carbohydrates, and fat targets.
Water Intake Calculator
Get a daily hydration target based on body weight and activity level.