Estimate daily protein, carbohydrate, and fat targets from your TDEE, selected calorie goal, and macro ratio.
Macronutrients are nutrients the body uses in relatively large amounts. Protein, carbohydrate, and fat provide energy and serve different structural and metabolic roles.
This calculator first estimates maintenance calories with CalcRocket's existing TDEE calculation. It then applies the selected calorie adjustment and divides the resulting calories by your chosen macro percentages.
Maintenance uses no adjustment. Weight-loss choices subtract calories and weight-gain choices add calories. These are planning estimates rather than guaranteed rates of weight change.
Target calories = estimated TDEE + goal adjustmentProtein provides approximately 4 kilocalories per gram.
Protein grams = target calories × protein percentage ÷ 4Digestible carbohydrate provides approximately 4 kilocalories per gram.
Carbohydrate grams = target calories × carbohydrate percentage ÷ 4Fat provides approximately 9 kilocalories per gram.
Fat grams = target calories × fat percentage ÷ 9For a 30-year-old male, 180 cm and 75 kg, using Mifflin–St Jeor and a moderately active multiplier, estimated maintenance is 2,681.5 kcal/day. Maintaining with the Balanced 30/40/30 split gives approximately 201.1 g protein, 268.2 g carbohydrates, and 89.4 g fat per day.
Protein supplies amino acids used in tissues and many body processes. Individual needs vary with body size, activity, age, and health.
Carbohydrates provide energy and include foods with very different fiber and nutrient profiles.
Dietary fat provides essential fatty acids, supports cell structures, and helps absorb fat-soluble vitamins.
TDEE is estimated. Monitor outcomes over time rather than treating the first result as an exact prescription.
Preset ratios are convenient starting patterns, not evidence that one split is universally best. Custom percentages must total 100%, and calorie conversion determines the gram targets.
Maintenance uses estimated TDEE. A deficit sets the target below estimated maintenance, while a surplus sets it above. Actual energy needs and weight changes can differ because activity, intake reporting, physiology, and adaptation vary.
The optional meal breakdown divides daily calories and macros evenly across three, four, or five meals. It is a mathematical split only; meals do not have to be identical, and daily totals can be distributed to suit individual preferences.
Macros is short for macronutrients. Protein, carbohydrates, and fat provide energy and are needed in larger quantities than micronutrients.
It reuses CalcRocket's TDEE calculation, which estimates BMR and applies the selected activity multiplier, then applies your goal adjustment.
No single ratio is best for everyone. Needs vary with health, preferences, training, and other individual factors.
Yes. Select Custom and enter protein, carbohydrate, and fat percentages that total exactly 100%.
Fat provides about 9 calories per gram, while protein and carbohydrate provide about 4 calories per gram.
Not necessarily. The meal breakdown is an even mathematical split for planning convenience.
No. TDEE and food intake are estimates, and energy expenditure can change over time.
Those situations require individualized guidance from an appropriately qualified health professional.
General energy and macronutrient context sources.