Calculate personalized protein, carb, and fat targets based on your goal — fat loss, maintenance, or muscle gain.
Aim to hit protein and calories first; carbs and fat can shift based on preference.
Macros are the three energy-providing nutrients: protein (4 kcal/g), carbohydrates (4 kcal/g), and fat (9 kcal/g). Together they make up all the calories you eat.
Hitting your protein and calorie targets accounts for ~90% of body composition results.

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Less than calories and protein. Once those are set, carb and fat ratios are largely a preference and performance issue.
Estimate the daily calories you need to maintain, lose, or gain weight.
Calculate optimal daily protein for weight loss, maintenance, or muscle gain.
Calculate your daily carb target.
Calculate your daily dietary fat target.