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Split your daily calories into protein, fat and carbohydrate
NNWA's macro calculator splits a daily calorie target into grams of protein, fat and carbohydrate. Protein is set per kilogram of body weight, from 1.4 to 2.0 grams depending on the approach; fat takes a fixed share of energy; carbohydrate receives the remaining calories, counted at 4 kilocalories per gram for protein and carbohydrate and 9 for fat.
A calorie target tells you how much to eat; it says nothing about what those calories should be made of. This calculator takes your daily calorie target and your body weight and divides the total into grams of protein, fat and carbohydrate. Choose one of three approaches (balanced, higher-protein or lower-carbohydrate) and it anchors protein to your body weight, gives fat a fixed share of energy, and leaves the rest to carbohydrate.
No single official body prescribes one macro split for everyone, so this calculator uses the method practitioners actually work with: protein dosed per kilogram of body weight, fat given a fixed share of energy, carbohydrate taking the remainder. The Indian context matters because everyday meals built on rice, roti and poha let carbohydrate fill any space it is offered. The ICMR-NIN Dietary Guidelines for Indians stress balanced meals and adequate protein; setting protein and fat deliberately, before carbohydrate, is a practical way to honour that.
Macro split: protein, fat, carbohydrate
The day's plate
- Protein
- 90g
- 1.4 g per kg
- Fat
- 56g
- 28% of energy
- Carbohydrate
- 234g
- Remainder
Protein and carbohydrate contribute 4 kcal per gram, fat 9. Protein is set per kilogram of body weight; fat as a share of energy; carbohydrate takes whatever calories remain.
Presets are starting points for healthy adults, not therapeutic prescriptions. If the carbohydrate figure reaches zero, the calorie target is too low for the chosen protein and fat. Raise it rather than forcing the split.
Learn when each split actually fits01What protein, fat and carbohydrate each do
Protein builds and repairs tissue: muscle most visibly, but also enzymes, hormones and immune cells. It is the macronutrient the body cannot readily stockpile, and the one that best preserves lean mass when you eat less, which is why every approach here treats it as non-negotiable.
Fat supplies concentrated energy, carries the fat-soluble vitamins A, D, E and K, and provides the raw material for hormones and cell membranes. Meals with too little of it tend to feel thin and unsatisfying, which is its own risk to a plan.
Carbohydrate is the body's most accessible fuel, particularly for the brain and for hard exercise. In Indian eating it also carries much of the day's fibre (through whole grains, millets, fruit and vegetables), so the aim is to choose it well, not merely to count it.
02The exact arithmetic behind the result
You give the calculator three things: a daily calorie target in kilocalories (kcal), your body weight in kilograms, and an approach. Balanced sets protein at 1.4 grams per kilogram of body weight (g/kg) and fat at 28% of energy; higher-protein sets protein at 2.0 g/kg and fat at 25%; lower-carbohydrate sets protein at 1.8 g/kg and fat at 40%.
Protein and fat are then converted to calories (protein at 4 kcal per gram, fat at 9) and subtracted from your target. Whatever remains is divided by 4 to give carbohydrate grams, because carbohydrate also supplies 4 kcal per gram; the figure is floored at zero and never shown as a negative. If you do not yet have a calorie target, start with the TDEE calculator, which estimates your total daily energy expenditure, or the simpler calorie calculator.
03Why protein is per kilogram while fat is a share of energy
The two are set differently because they answer different questions. Protein need scales with the body it has to maintain: a 55 kg body and a 90 kg body carry different amounts of tissue, so the honest unit is grams per kilogram. Tying protein to a percentage of calories would shrink it exactly when calories drop, the moment protein matters most.
Fat has no comparable per-kilogram requirement beyond a small essential minimum; its practical role in a plan is energy and satisfaction, which makes a share of total energy the natural unit. Carbohydrate then works as the flexible remainder, expanding in a surplus and contracting in a deficit. For a closer treatment of the protein figure on its own, use the protein calculator.
04What these presets cannot tell you
The three approaches are starting points for healthy adults, not therapeutic prescriptions. They know nothing about your training, your medical history, your medications or your stage of life, and none of them constitutes medical nutrition therapy. Diabetes, kidney disease, pregnancy and disordered eating all change macronutrient needs in ways a preset cannot anticipate.
The calculator is also silent on everything that decides how a split feels in practice: food quality, fibre, meal timing and how protein is spread across the day. The lower-carbohydrate approach is a moderate shift towards fat, not a ketogenic protocol. Treat the output as a first draft to observe and adjust over weeks, not a target to obey.
05From gram targets to meals on a plate
A macro split only becomes useful when it turns into food someone will actually eat: dal and rice in sensible proportions, protein present at breakfast rather than crowded into dinner, cooking fat measured instead of guessed. That translation (and the adjusting that follows as weight, hunger and energy respond) is the real craft, and it can be learnt.
NNWA's Diploma in Nutrition teaches macronutrient planning within full diet design for Indian households, and the weight management course applies the same arithmetic to fat loss and healthy gain. NNWA's certificates are skill-enhancement qualifications; they train you to plan and coach, not to practise clinical dietetics.
These figures are a screening starting point for healthy adults, not a diagnosis or a therapeutic diet. If you are pregnant, living with a condition such as diabetes or kidney disease, or planning a major change in how you eat, have a doctor or qualified nutrition professional set your targets before you follow them.
What people ask about the macro split
Expand any question to read the answer in full.
What calorie number should I enter?
Your daily target, not your resting needs alone. Estimate maintenance with the TDEE calculator, then adjust it modestly down for fat loss or up for gain, and enter that figure. The macro calculator only divides what you give it, so if the calorie number is wrong, every gram figure inherits the error.
Which approach should I choose?
Balanced suits most healthy adults eating typical mixed Indian meals. Higher-protein suits people who train with weights, are holding muscle through a calorie deficit, or simply feel fuller on more protein. Lower-carbohydrate raises fat to 40% of energy for those who prefer fewer cereal-heavy meals. All three are starting points; give one a few weeks, then adjust on your own results.
Can the carbohydrate figure come out very low, or even zero?
It can. If the calorie target is low and body weight is high, protein and fat can claim nearly all the energy, so the calculator floors carbohydrate at zero rather than showing a negative number. Treat a very low figure as a sign the inputs do not fit together (recheck the calorie target), not as advice to eat no carbohydrate.
Is 2.0 grams of protein per kilogram safe?
For healthy adults with normal kidney function, intakes at this level are commonly used, especially by people who train with weights, and it sits within the range sports nutrition practice generally works in. Anyone with kidney disease or another diagnosed condition should have their protein intake set by a doctor or qualified clinician, not by a calculator.
Do these splits work for vegetarian Indian diets?
The gram targets apply to any diet, but reaching the protein figure takes more planning without eggs, fish or meat. Dals, paneer, curd, soya chunks and milk all contribute, though most bring carbohydrate or fat along with them. A vegetarian aiming at the higher-protein approach usually needs a protein source at every meal rather than one large serving at dinner.
Is this a meal plan for diabetes or weight loss?
No. It produces gram targets for healthy adults, not food choices or clinical plans. Diabetes, kidney disease and pregnancy change macronutrient needs in ways a three-option preset cannot capture, so those targets belong with a doctor or qualified professional. For everyday weight management in a healthy adult, the output is a reasonable first draft to adjust from.
Turn the arithmetic into a skill
A figure is the first five minutes of a consultation. These programmes teach what a practitioner does with it.
Diploma in Nutrition
Learn to turn calorie and macro targets into complete, food-first diet plans.
Sports Nutrition Course
Per-kilogram protein dosing and fuelling for training come straight from this field.
Weight Management Course
Macro splits are the day-to-day working tool of weight-loss and weight-gain coaching.
A figure is not a diet plan
Turning a screening number into a chart someone will actually follow (for their condition, their kitchen and their budget) is the skill the Diploma teaches.