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Use this macro calculator to estimate daily protein, carbohydrate, and fat grams for fat loss, maintenance, or muscle gain. It starts with a calorie estimate, applies your goal, then turns the result into practical macro targets you can compare with meals and training.
Updated: May 8, 2026
Looking for a related estimate? Try TDEE Calculator or Calorie Calculator.
What you will get
Clear input, result, and explanation in one place
The result shows calorie target, protein, carbs, fat, and the split behind the numbers.
Calculator
Inputs
Estimate onlyAdd your body metrics, activity level, goal, and macro style to estimate daily macro targets.
The page uses a maintenance-calorie baseline and then applies a goal-based macro split. Results are planning estimates only.
Result
Main estimate
2,755 kcal
Maintenance with a balanced split. Maintenance calories are the baseline before the goal adjustment.
Maintenance baseline: 2,755 kcal
Protein
148 g
592 kcal from protein.
Carbs
348 g
1,392 kcal from carbs.
Fat
86 g
771 kcal from fat.
Macro split
Protein
21%
Carbs
51%
Fat
28%
Interpretation
These are planning estimates only. Macro needs vary with body composition, training load, food preferences, and adherence.
Balanced split with 1.8 g protein per kg and a goal-adjusted calorie target.
Calculator purpose
A macro calculator converts calories into daily protein, carbohydrate, and fat amounts. It is most useful when you want a food structure that matches a goal instead of only knowing total calories.
Formula
This page starts with a calorie baseline derived from the Mifflin-St Jeor equation and an activity multiplier. It then applies a goal adjustment and converts the result into grams using a clear allocation strategy rather than an opaque prescription.
Macros
Protein supports fullness, muscle repair, and training recovery. Carbs are the body’s main quick-use fuel source, especially for harder training. Fat supports overall energy intake, food satisfaction, and essential body functions.
Quick answer
A balanced split is a sensible default when you are unsure. A higher-protein split often fits fat loss or strength training. A higher-carb split can fit endurance training or harder gym sessions. A lower-carb split may fit preference, but it still needs enough protein, fat, and total calories.
Goals
Macro targets only make sense when the calorie target is sensible too. A fat-loss plan usually needs a modest deficit, maintenance keeps intake near the baseline, and muscle-gain plans usually need a small surplus rather than a large jump in calories.
Comparison
A calorie calculator gives you the daily energy target first. A macro calculator takes that number and turns it into a more useful daily split. If you are still choosing a calorie target, start with the calorie calculator first.
Fat loss
For fat loss, many people keep protein relatively high and reduce calories through a smaller amount of carbs and fat. That approach can help the plan feel more manageable while still leaving room for normal meals and training.
Maintenance
Maintenance macros are useful when you want to keep weight steady while keeping meal structure clear. They can help you eat consistently without having to guess each day how much of each food group to include.
Muscle gain
Muscle-gain plans usually benefit from enough total calories, enough protein, and enough carbohydrate to support training. The goal is usually a moderate surplus, not a large one, because a small surplus is easier to sustain and adjust.
Protein
People differ in size, training load, appetite, and goals. That is why the same protein number is not ideal for everyone. A planning range is more useful than a one-size-fits-all prescription.
Reliability
Macro estimates are less useful when activity changes a lot from day to day, when body composition differs sharply from average assumptions, or when a medical or dietary situation needs more individual planning.
Professional guidance
If you have diabetes, a history of disordered eating, are pregnant, or need a highly individualized nutrition plan, a qualified professional can help you adjust macro targets more safely and accurately.
Common questions
It turns a calorie target into daily protein, carbohydrate, and fat targets.
This page estimates maintenance calories first, applies a goal adjustment, and then splits the calories into grams for each macro.
That depends on your size, training, and goal, but a practical planning range is usually more useful than a single exact number.
Macros are not better for every person, but they give more structure when you want both a calorie target and food composition guidance.
Yes, usually by using a moderate calorie deficit and keeping protein high enough to support fullness and training.
A higher-protein split with moderate carbs and moderate fat is a common planning starting point.
A moderate surplus with enough protein and enough carbohydrate for training is usually a better starting point than a very high-calorie plan.
Yes. Age, sex, activity, goal, appetite, and body composition can all change what works best.
It is a strong planning estimate, but not a prescription. Real needs change with training, routine, and how you respond to the plan.
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