
Numbers in Context
Macro Calories Explained: The 4-4-9 Arithmetic
The standard 4-4-9 estimate assigns 4 calories per gram of protein, 4 per gram of carbohydrate, and 9 per gram of fat.
Macro arithmetic can explain how a label estimate is assembled. It cannot determine an individual's needs, measure a restaurant meal perfectly, or decide whether a food was worth eating. Use numbers only when they serve a clear, non-distressing purpose. Exact calculation deserves exact inputs; personal targets belong with appropriate qualified professionals.

The standard 4-4-9 estimate assigns 4 calories per gram of protein, 4 per gram of carbohydrate, and 9 per gram of fat.