Glossary
Macros
Updated 2026-07-01By Chris RichardsAll terms
Definition
Macros are the three calorie-providing nutrients: protein, carbohydrates, and fat.
Definition
Protein and carbohydrates provide about 4 calories per gram; fat about 9. Tracking macros helps shape satiety, training fuel, and meal composition inside a calorie budget.
Sources
- [1] Acceptable Macronutrient Distribution Range (protein 10–35% of energy; RDA 0.8 g/kg) — National Academies of Sciences, Engineering, and Medicine — Dietary Reference Intakes
General nutrition information, not medical advice. Calorie and macro targets are estimates — talk to a doctor or a registered dietitian before changing your diet, especially if you are pregnant, managing a health condition, or have a history of disordered eating.
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