Health Calculators
❤️Health and medical calculators for monitoring wellness, body metrics, nutrition, fitness goals, and everyday medical unit conversions.
Diabetes
Fitness and Exercise
Calories Burned Calculator
Calculate calories burned during various exercises and physical activities based on duration, intensity, and body weight
Target Heart Rate Calculator
Find your target heart rate training zones using the Karvonen and percentage-of-max methods.
Steps to Calories Calculator
Estimate calories burned from your step count, weight, and height.
Steps to Miles Calculator
Convert your step count to miles and kilometers based on stride length.
Calories Burned Walking Calculator
Estimate calories burned walking based on weight, distance, and pace.
Nutrition
Calorie Calculator
Estimate daily calories to maintain, lose, or gain weight based on your goals and activity.
Protein Intake Calculator
Estimate your daily protein needs based on body weight and activity level.
Water Intake Calculator
Estimate how much water you should drink per day from body weight, activity, and climate.
Fiber Intake Calculator
Calculate your recommended daily fiber intake from calories, age, and sex.
Caffeine Intake Calculator
Check your daily caffeine intake against safe limits based on body weight.
Sugar Intake Calculator
Find your recommended daily added-sugar limit based on your calorie intake.
Body Metrics
Body Fat Percentage Calculator
Calculate your body fat percentage using various methods including skinfold measurements, body circumference, and BMI-based estimates
BMI Calculator
Calculate your Body Mass Index (BMI) from height and weight, with WHO category classification.
BMR Calculator
Estimate your Basal Metabolic Rate — the calories your body burns at rest — using the Mifflin-St Jeor equation.
TDEE Calculator
Calculate your Total Daily Energy Expenditure from BMR and activity level to plan calorie intake.
Ideal Weight Calculator
Find your ideal body weight range using the Robinson, Miller, Devine, and Hamwi formulas.
Lean Body Mass Calculator
Estimate your lean body mass and fat mass from height, weight, and gender.
Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio and assess cardiovascular health risk by WHO thresholds.
Waist-to-Height Ratio Calculator
Calculate your waist-to-height ratio (WHtR) and assess health risk.
Ponderal Index Calculator
Calculate the ponderal index (a height-normalized body mass measure) from height and weight.
Heart Health
Mean Arterial Pressure Calculator
Calculate Mean Arterial Pressure (MAP) from systolic and diastolic blood pressure readings for cardiovascular assessment
Pulse Pressure Calculator
Calculate pulse pressure and mean arterial pressure from systolic and diastolic readings.
Max Heart Rate Calculator
Estimate your maximum heart rate from age using several formulas, with training zones.
Blood Pressure Calculator
Classify a blood pressure reading into AHA categories from systolic and diastolic values.
Heart Rate Zone Calculator
Calculate your five heart rate training zones from your maximum heart rate.
Mental Health
Women's Health
Men's Health
Pediatrics
Medication and Dosage
Dosage by Weight Calculator
Calculate medication dosage based on body weight for accurate and safe drug administration
IV Drip Rate Calculator
Calculate IV drip rate in drops per minute from volume, time, and drop factor.
Body Surface Area Calculator
Calculate body surface area (BSA) from height and weight using the Mosteller formula.
Estimated Blood Volume Calculator
Estimate total blood volume from body weight using standard per-kilogram factors.
Sleep and Recovery
Sleep Cycle Calculator
Calculate optimal sleep and wake times based on sleep cycles to wake up feeling refreshed and well-rested
Sleep Time Calculator
Find the best bedtimes or wake times based on 90-minute sleep cycles.
Sleep Debt Calculator
Calculate your accumulated sleep debt from nightly sleep versus your target.