Health Calculators
Track and understand your health metrics with science-based calculators. BMI, calorie needs, body fat percentage, macros, heart rate zones, pregnancy tracking, blood pressure, and more.
BMI Calculator
Calculate your Body Mass Index and weight category.
Body Fat Calculator
Estimate your body fat percentage using the US Navy method.
Calorie Calculator
Find your daily calorie needs (TDEE) based on activity level and goals.
Pregnancy Calculator
Calculate your due date and pregnancy week from your last period.
Ovulation Calculator
Find your fertile window and most likely ovulation date.
Due Date Calculator
Calculate your baby's due date from conception date or last period.
Water Intake Calculator
Calculate your recommended daily water intake based on weight and activity.
Ideal Weight Calculator
Find your ideal body weight range based on height using multiple formulas.
BMR Calculator
Calculate your Basal Metabolic Rate — calories burned at rest.
Heart Rate Calculator
Calculate your maximum heart rate and target training zones.
Macro Calculator
Calculate your ideal protein, carbohydrate, and fat macros.
TDEE Calculator
Calculate your Total Daily Energy Expenditure for precise calorie planning.
Calorie Burn Calculator
Calculate calories burned during any physical activity or exercise.
Running Pace Calculator
Calculate your running pace, speed, and finish time for any distance.
Protein Intake Calculator
Calculate your daily protein requirement based on weight and activity.
Alcohol Units Calculator
Calculate alcohol units and weekly intake from drinks consumed.
Sleep Debt Calculator
Calculate your accumulated sleep debt and how long to recover.
Body Surface Area Calculator
Calculate body surface area using the DuBois and Mosteller formulas.
Blood Pressure Calculator
Check your blood pressure category and understand what your reading means.
VO2 Max Calculator
Estimate your VO2 max and cardiorespiratory fitness level.
Cholesterol Ratio Calculator
Calculate your cholesterol ratios and cardiovascular risk.
IVF Due Date Calculator
Calculate IVF due date from embryo transfer date.
Postpartum Recovery Calculator
Track postpartum recovery milestones and timeline.
Sobriety Calculator
Calculate your sobriety time and milestones from quit date.
Lean Body Mass Calculator
Calculate your lean body mass and fat-free mass.
Food Calorie Calculator
Look up calories and macros for common foods.
Fertility Window Calculator
Calculate your fertile window and best days to conceive.
Vitamin D Calculator
Estimate your vitamin D synthesis from sun exposure.
Target Weight Calculator
Calculate calories needed to reach your target weight by a goal date.
Nicotine & Smoking Cost Calculator
Calculate the health and financial cost of smoking.