Free Fitness & Nutrition Calculators
Simple calculators for calories, macros, body composition, weight goals and strength training.
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Latest Fitness Calculators
Explore the newest tools added to Gym Macro Calculator.
Lean Body Mass Calculator
Estimate your lean body mass using body fat percentage or common height-and-weight formulas such as Boer, James and Hume.
Open calculator →Body Fat Calculator
Estimate your body fat percentage using the US Navy tape-measure method and see your approximate fat mass and lean body mass.
Open calculator →Calorie Deficit Calculator
Calculate a starting calorie deficit for weight loss and see your estimated maintenance calories, daily calorie target and approximate weekly progress.
Open calculator →BMR Calculator
Estimate your Basal Metabolic Rate (BMR) and see how many calories your body may burn at rest based on your age, sex,…
Open calculator →Calorie Calculator
Calculate how many calories you may need each day for weight loss, maintenance or weight gain based on your age, body size…
Open calculator →Macro Calculator
Calculate your daily calories, protein, carbohydrates and fat for fat loss, maintenance or muscle gain.
Open calculator →All Fitness Calculators
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BMR Calculator
Estimate your Basal Metabolic Rate (BMR) and see how many calories your body may burn at rest based on your age, sex,…
Open calculator →Body Fat Calculator
Estimate your body fat percentage using the US Navy tape-measure method and see your approximate fat mass and lean body mass.
Open calculator →Calorie Calculator
Calculate how many calories you may need each day for weight loss, maintenance or weight gain based on your age, body size…
Open calculator →Calorie Deficit Calculator
Calculate a starting calorie deficit for weight loss and see your estimated maintenance calories, daily calorie target and approximate weekly progress.
Open calculator →Lean Body Mass Calculator
Estimate your lean body mass using body fat percentage or common height-and-weight formulas such as Boer, James and Hume.
Open calculator →Macro Calculator
Calculate your daily calories, protein, carbohydrates and fat for fat loss, maintenance or muscle gain.
Open calculator →Protein Calculator
Estimate your daily protein intake for general health, fitness, fat loss or muscle gain based on your body weight and goal.
Open calculator →TDEE Calculator
Estimate your TDEE, BMR and daily calorie needs for weight loss, maintenance or muscle gain.
Open calculator →Simple Inputs
Enter only the information needed for each calculation.
Clear Results
Results are designed to be easy to understand and use.
Transparent Methods
We explain formulas and important assumptions where relevant.