Health Calculators
Body and nutrition calculators to track BMI, estimate calorie needs and support your fitness goals.
BMI Calculator
Calculate your body mass index (BMI) and find out whether you fall in the underweight, normal, overweight or obese range.
Open calculatorCalorie Calculator (BMR & TDEE)
Estimate the calories you burn at rest (BMR) and each day (TDEE), with suggested targets for losing or gaining weight.
Open calculatorPregnancy Due Date Calculator
Enter the first day of your last menstrual period to estimate your due date using Naegele's rule, adjusted for your cycle length.
Open calculatorOne-Rep Max Calculator (1RM)
Estimate your one-rep max (1RM), the most weight you could lift for a single rep, from a weight you lifted for several reps. Pick a formula and get a percentage table of training loads.
Open calculatorBody Fat Calculator (Navy Method)
Estimate your body fat percentage using the U.S. Navy tape method, with your fitness category and, if you add your weight, your fat mass and lean mass.
Open calculatorMacro Calculator (Protein, Carbs, Fat)
Turn your daily calorie target into grams of protein, carbs and fat using a preset macro split, from balanced to high protein, low carb or keto.
Open calculatorIdeal Weight Calculator
Estimate a healthy target weight for your height and sex. The result averages four well-known formulas and shows the healthy range based on BMI.
Open calculatorWater Intake Calculator
Estimate a daily water target from your body weight and how much you exercise. Results are shown in liters, fluid ounces and cups.
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