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12 free calculators for calories, metabolism and body composition. Each one shows its formula and sources, works in metric and US units, and keeps your numbers in your browser.
Calories
TDEE calculatorYour total daily calories, with goals and macros. Start here.Maintenance calories calculatorCalories to keep your weight steady, at every activity level.Cutting calorie calculatorA fat-loss target with a safety check.Bulking calculatorA lean surplus for building muscle.Macro calculatorProtein, carbs and fat in grams, per day and per meal.
Metabolism
BMR calculatorCalories you burn at rest, with three formulas compared.Katch-McArdle calculatorBMR and TDEE from lean body mass.
Body composition
Body fat calculatorUS Navy method with a tape measure.BMI calculatorBody mass index, healthy weight range and waist-to-height ratio.FFMI calculatorHow muscular you are for your height, and tracking recomp.
Activity and progress
Walking calorie calculatorCalories from steps or distance, gross and net.Weight loss percentage calculatorPercentage lost, goal progress and weekly rate.
Not sure where to start? Use the TDEE calculator first, then read how many calories should I eat?