Health & Fitness calculators
BMI, calories, body composition, and pregnancy tools.
- BMI Calculator (Body Mass Index)Calculate your Body Mass Index in metric or imperial units and see the WHO weight category.
- BMR & TDEE CalculatorEstimate your Basal Metabolic Rate and Total Daily Energy Expenditure using the Mifflin-St Jeor equation.
- Body Fat Percentage CalculatorEstimate your body fat percentage using the US Navy circumference method.
- Calorie CalculatorPersonalized daily calorie target based on your TDEE and goal — maintain, lose, or gain weight.
- Pregnancy Due Date CalculatorEstimate your pregnancy due date using Naegele's rule and see your current gestational age.
- Ideal Weight CalculatorEstimate your ideal body weight using the Devine, Robinson, Miller, Hamwi formulas, plus the healthy BMI range.
- Heart Rate Zones CalculatorCalculate your max HR and 5 training zones using the Karvonen heart rate reserve method.
- Water Intake CalculatorEstimate your daily water needs based on body weight and exercise minutes.