Health Calculators

Calculate BMI, BMR, daily caloric needs, and physiological metrics.

10 Tools Available

Calculate your Body Mass Index (BMI) using metric or imperial measurements.

Find your Basal Metabolic Rate and Total Daily Energy Expenditure.

Estimate your baby's due date from your last period, conception date, or ultrasound.

Calculate your daily calorie needs (BMR and TDEE) based on your activity level and weight goal.

Estimate your body fat percentage using the US Navy method or BMI-based formula.

Calculate your ideal body weight using four clinical formulas: Devine, Robinson, Miller, and Hamwi.

Calculate your recommended daily water intake based on body weight, activity level, and climate.

Calculate your optimal daily macronutrient intake — protein, carbohydrates, and fat — for your fitness goal.

Calculate your 5 training heart rate zones based on your age and optional resting heart rate.

Find the best wake-up times or bedtimes based on 90-minute sleep cycles for optimal rest.