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Health & Fitness Calculators
Free calculators for BMI, calories, body fat, fitness goals, and health metrics.
BMI Calculator Calculate your Body Mass Index (BMI) using weight and height. See your BMI categ
Calorie Calculator Calculate daily calorie needs based on age, gender, weight, height, and activity
Body Fat Calculator Calculate body fat percentage using the U.S. Navy method with waist, neck, and h
BMR Calculator Calculate your Basal Metabolic Rate using both Mifflin-St Jeor and Harris-Benedi
TDEE Calculator Calculate Total Daily Energy Expenditure based on BMR and activity level. Find y
Macro Calculator Calculate daily macronutrient targets — protein, carbs, and fat grams — based on
Ideal Weight Calculator Calculate your ideal body weight using Devine, Robinson, Miller, and Hamwi formu
Protein Calculator Calculate how much protein you need per day based on weight and fitness goals.
Pregnancy Calculator Calculate your due date, current trimester, and weeks pregnant based on your las
Due Date Calculator Calculate your baby's due date from last menstrual period or conception date. Se
Ovulation Calculator Calculate your ovulation date and fertile window based on your menstrual cycle l
Sleep Calculator Calculate optimal bedtimes based on your wake-up time and 90-minute sleep cycles
Water Intake Calculator Calculate how much water you should drink daily based on weight, activity level,
Heart Rate Calculator Calculate maximum heart rate and target training zones using the Karvonen method
Pace Calculator Calculate running or walking pace, speed, and predicted finish times from your d
Calories Burned Calculator Calculate calories burned during exercise based on activity type, duration, and
BAC Calculator Estimate blood alcohol content based on drinks consumed, body weight, gender, an
One Rep Max Calculator Estimate your one-rep max (1RM) from weight lifted and reps completed. See train