Health & Fitness Calculators
Calculators for tracking health and fitness metrics like BMI, body fat, calories, macros, sleep, and heart rate — everything you need to understand your body and reach your goals.
BMI Calculator
Find your body mass index, weight category, and healthy weight range for your height.
Open tool →🎯Ideal Weight Calculator
Estimate your ideal body weight using four medical formulas, plus the healthy BMI range for your height.
Open tool →📉Weight Loss Calculator
Get a daily calorie target and timeline to reach your goal weight, based on your BMR and activity level.
Open tool →📈Weight Gain Calculator
Get a daily calorie target and timeline to reach your goal weight, based on your BMR and activity level.
Open tool →💧Water Intake Calculator
Find your recommended daily water intake based on your body weight and exercise.
Open tool →🤰Due Date Calculator
Estimate your pregnancy due date from your last menstrual period or conception date.
Open tool →🌸Ovulation Calculator
Estimate your next ovulation date and fertile window from your cycle length and last period.
Open tool →🔥Calorie Calculator
Find your daily calorie needs to maintain, lose, or gain weight, based on your BMR and activity level.
Open tool →🍗Macro Calculator
Calculate your daily protein, carb, and fat targets from your calorie needs and goal.
Open tool →📏Body Fat Calculator
Estimate your body fat percentage using the U.S. Navy circumference method.
Open tool →❤️Target Heart Rate Calculator
Find your target heart rate zones for exercise based on your age.
Open tool →😴Sleep Calculator
Find the best bedtime or wake-up time based on 90-minute sleep cycles.
Open tool →