Health Calculators
Calorie Calculator
Estimate your daily calorie needs to maintain, lose, or gain weight, based on your age, sex, height, weight, and activity level.
Health Calculators
Calories Burned Calculator
Estimate the calories burned during an activity, based on its intensity (MET value), your body weight, and how long you did it.
Health Calculators
BMR Calculator
Find your Basal Metabolic Rate — the calories your body burns at complete rest — and see calorie targets across activity levels.
Health Calculators
Body Fat Calculator
Estimate your body fat percentage using the U.S. Navy circumference method, and see how it compares to standard fitness categories.
Health Calculators
Lean Body Mass Calculator
Estimate your lean body mass — everything that isn't fat — using three well-known formulas.
Health Calculators
Target Heart Rate Calculator
Find your estimated maximum heart rate and your target training zones using the Karvonen method.
Health Calculators
Cardiovascular Risk (ASCVD/PREVENT) Calculator
Estimate your 10-year risk of cardiovascular disease using the American Heart Association's PREVENT equations (2023), for adults 30–79 without known cardiovascular disease.
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