FitCalcLab
Nutrition6 min readElena VaughnUpdated 2026-08-19

How to set your macros for your goal

Macros sound technical but the order is simple. Set protein, set fat, let carbs fill the rest. Here is how to do it from your calorie target.

How to set your macros for your goal

Macros are just the three energy nutrients: protein, carbohydrate and fat. Setting them means deciding how your daily calories are split between the three. It sounds technical, but there is a simple order that works for almost any goal.

Step one, set protein

Protein is the anchor. It protects muscle, keeps you full and has the highest priority. Set it first, before you think about anything else on the plate.

1.6-2.2 g/kg
Daily protein linked to maximal muscle retention and growth in trained adults, per the ISSN position stand.
ISSN Position Stand on protein and exercise

Step two, set fat

Fat supports hormone production and keeps meals satisfying. Around 0.8 to 1 g per kg of body weight is a sensible floor. Going much lower for long stretches tends to backfire on mood and hormones.

Step three, carbs fill the rest

Whatever calories are left after protein and fat go to carbohydrate. Carbs are your main training fuel, so athletes and hard trainers usually want more of them. There is no single perfect ratio, only what fits your calories and how you train.

  • Protein and carbs each provide about 4 kcal per gram.
  • Fat provides about 9 kcal per gram, so small amounts add up fast.
  • 1 g protein per pound is a common shortcut close to 2 g per kg.
4 / 4 / 9 kcal
Energy per gram of protein, carbohydrate and fat, the basis of any macro calculation.
NHS, food energy and calories

Frequently asked questions