Health & Fitness Calculators

BMI Calculator Calculate your Body Mass Index (BMI) and see your weight category. BMR Calculator Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE). Calorie Calculator Estimate how many calories you need per day based on your goal — lose, maintain, or gain weight. Body Fat Calculator Estimate body fat percentage using the U.S. Navy circumference method. Ideal Weight Calculator Find your ideal body weight using four widely used medical formulas. Pace Calculator Calculate running, walking, or cycling pace from distance and time. Due Date Calculator Estimate your baby's due date from your last menstrual period or conception date. Pregnancy Weight Gain Calculator Calculate recommended pregnancy weight gain based on pre-pregnancy BMI. Ovulation Calculator Estimate your ovulation date and fertile window based on your cycle. One Rep Max Calculator Estimate your one-repetition maximum (1RM) for any lift from a submaximal set. Running Calorie Calculator Calculate calories burned running based on distance, weight, and pace. Macronutrient Calculator Calculate your daily protein, carbohydrate, and fat targets based on your goals. Water Intake Calculator Calculate your recommended daily water intake based on weight, activity, and climate. Sleep Calculator Calculate the best bedtimes and wake times based on sleep cycles. Target Heart Rate Calculator Calculate your maximum heart rate and target heart rate zones for exercise. Waist-to-Hip Ratio Calculator Calculate your waist-to-hip ratio and health risk category. Child Height Predictor Predict a child's adult height based on parents' heights using the mid-parental formula.