Calculate a practical protein, carb, and fat split for fat loss, maintenance, or muscle gain, then personalize it with ZenFit AI.
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Enter the basics that shape this estimate, then adjust the numbers after the calculator loads.
calories
body weight
goal
diet preference
Calories are the total energy budget. Protein, carbohydrate, and fat divide that budget into grams so meals can support satiety, training, and preference. One gram of protein or carbohydrate is treated as 4 kcal; one gram of fat as 9 kcal.
The tool starts from calories, body weight, and goal. Protein is set first, fat receives a minimum planning allocation, and carbohydrate fills the remaining calorie budget. Rounding means the displayed grams may not sum perfectly to the displayed calories.
Keep protein and total calories as useful anchors, then adjust carbohydrate and fat around preference, hunger, and training. Food labels and portions vary, so do not treat the split as exact.
Starts from a calorie target, body weight, and goal to estimate practical protein, carbohydrate, and fat ranges.
The estimate should be compared with real-world outcomes over time. Body weight trends, training performance, hunger, schedule, sleep, injury status, and consistency can all change what works in practice.
This tool is for general fitness education and planning context. It is not medical advice. If you are pregnant, managing a medical condition, recovering from an injury, changing medication, or unsure whether a calorie or training change is appropriate, speak with a qualified clinician.
Next step
Use the quiz to connect this tool's estimate to workouts, meals, progress tracking, and AI coach context around your real week.
Most people do well starting with higher protein, moderate fats, and enough carbohydrates to support training and adherence.
Calories set the overall energy target, while macros help shape satiety, recovery, training performance, and food structure.
Yes. Paid ZenFit plans can generate meals, recipes, and meal calendars around your calorie target, macros, and food preferences.
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