Browse our collection of 50+ free, science-backed health calculators. No registration needed.
Calculate your Body Mass Index based on height and weight.
Calculate Now →Find out how many calories you need daily based on your goals.
Calculate Now →Calculate your ideal protein, carbs, and fat intake.
Calculate Now →Estimate your body fat percentage using body measurements.
Calculate Now →Find your ideal weight range based on height and frame size.
Calculate Now →Calculate your Basal Metabolic Rate — calories burned at rest.
Calculate Now →Calculate your Total Daily Energy Expenditure.
Calculate Now →Find out how much water you should drink daily.
Calculate Now →Find the best time to sleep or wake up based on sleep cycles.
Calculate Now →Calculate your target heart rate zones for exercise.
Calculate Now →Check if your blood pressure reading is in a healthy range.
Calculate Now →Estimate your baby's due date from your last menstrual period.
Calculate Now →Predict your most fertile days for conception planning.
Calculate Now →Check if your baby's weight is within a healthy percentile range.
Calculate Now →Calculate BMI percentile for children aged 2-19.
Calculate Now →Track and predict your menstrual cycle dates.
Calculate Now →Identify your most fertile days each month.
Calculate Now →Calculate your daily protein requirements.
Calculate Now →Find your optimal daily carbohydrate intake.
Calculate Now →Determine your optimal daily fat intake.
Calculate Now →Calculate your recommended daily fiber intake.
Calculate Now →Estimate your daily vitamin D needs.
Calculate Now →Find your recommended daily iron intake.
Calculate Now →Calculate your daily calcium requirements.
Calculate Now →Assess your cholesterol levels and cardiovascular risk.
Calculate Now →Assess your risk factors for type 2 diabetes.
Calculate Now →Evaluate your stroke risk based on key health factors.
Calculate Now →Calculate your waist-to-hip ratio and health risk.
Calculate Now →Check your waist-to-height ratio for health assessment.
Calculate Now →Calculate your lean body mass (fat-free mass).
Calculate Now →Calculate your body surface area using the Du Bois formula.
Calculate Now →Estimate your one-repetition maximum for any lift.
Calculate Now →Estimate your VO2 max aerobic fitness level.
Calculate Now →Convert your daily steps into estimated calories burned.
Calculate Now →Calculate your running pace, speed, and finish times.
Calculate Now →Estimate calories burned during cycling.
Calculate Now →Calculate calories burned while swimming.
Calculate Now →Estimate calories burned during yoga practice.
Calculate Now →Plan your intermittent fasting eating window.
Calculate Now →Calculate your ideal macros for a ketogenic diet.
Calculate Now →Calculate alcohol units and calories in your drinks.
Calculate Now →Track your daily caffeine consumption.
Calculate Now →See how much smoking costs you financially and health-wise.
Calculate Now →Assess your current stress level with this quick quiz.
Calculate Now →Screen for anxiety symptoms with the GAD-7 inspired assessment.
Calculate Now →Quick depression screening based on PHQ-9 inspired questions.
Calculate Now →Calculate your accumulated sleep debt.
Calculate Now →Estimate your life expectancy based on lifestyle factors.
Calculate Now →Estimate your biological age vs chronological age.
Calculate Now →Calculate medication dosage based on weight (for reference only).
Calculate Now →Estimate your blood alcohol concentration.
Calculate Now →