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Macro Calculator

Turn your calorie target into daily grams of protein, carbohydrate and fat, split across your meals, with five ready-made ratios to choose from.

Your details

years
cm
ft
in
kg
lbs
meals
Daily calorie target
--
Protein--
Carbohydrate--
Fat--
Protein per kg--

Macro breakdown

Grams, calories and share

MacroPer dayPer meal

How the split is built

calories = BMR (Mifflin-St Jeor) × activity factor × goal factor

protein grams = calories × protein% ÷ 4
carb grams = calories × carb% ÷ 4
fat grams = calories × fat% ÷ 9

protein 4 kcal/g · carbohydrate 4 kcal/g · fat 9 kcal/g

Calories decide whether you gain or lose; macros decide what you gain or lose and how you feel doing it. Protein protects muscle in a deficit and supports repair in a surplus, carbohydrate fuels hard training and recovery, and fat keeps hormones and absorption of fat-soluble vitamins working. Any split that hits your calories and gives you enough protein will work — the rest is preference and adherence.

Practical floors and ceilings

Keep protein around 1.6 to 2.2 grams per kilogram of body weight for most training goals, and higher at the top of that range while dieting. Do not let fat drop below about 0.6 grams per kilogram for any length of time. Whatever calories are left belong to carbohydrate, and that is the lever you move first when training feels flat or when you need to tighten a deficit.

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Nutrition guidance for healthy adults. Anyone with kidney disease, diabetes, an eating disorder history or who is pregnant should get individual advice from a registered dietitian or doctor.

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