Free Health Calculators
Your health in numbers. Our health calculators use clinically validated formulas to help you understand your body, plan your lifestyle, and make informed wellness decisions. All calculations happen in your browser — no data is stored or shared.
Body Mass Index (BMI)
Total Daily Energy Expenditure (TDEE)
Sleep cycle optimization
Pregnancy due date estimation
BMI Calculator
Calculate your Body Mass Index (BMI) using metric or imperial units. Understand your weight category and health implications.
Open calculator →TDEE Calculator
Calculate your Total Daily Energy Expenditure (TDEE) to understand how many calories you burn per day based on your activity level.
Open calculator →Sleep Calculator
Calculate optimal sleep and wake times based on sleep cycles. Get recommendations for better sleep quality.
Open calculator →Pregnancy Calculator
Calculate your due date, current trimester, and pregnancy week based on your last menstrual period.
Open calculator →