Health

Health Calculators

Estimate BMI, calories, due dates, and other health metrics with clear, sourced methods.

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Available calculators

BMI CalculatorCalculate adult BMI in imperial or metric units with CDC-style categories. Free, private, instant.
Calorie CalculatorEstimate BMR and daily calories (TDEE) from age, sex, height, weight, and activity. Free Mifflin-St Jeor tool.
Due Date CalculatorEstimate pregnancy due date from LMP or conception. See gestational age and trimester — free and private.