Calories per gram of protein, carbs and fat
Calculate calories from grams of protein, carbs and fat
Energy from protein, carbs and fat
kcal
Energy per gram
| Nutrient | kcal/g | kJ/g |
|---|---|---|
| Protein | 4 | 17 |
| Carbohydrates (excluding polyols) | 4 | 17 |
| Fat | 9 | 37 |
| Fiber | 2 | 8 |
| Alcohol | 7 | 29 |
| Polyols (except erythritol) | 2.4 | 10 |
How it works
These are the factors EU food labels use to compute energy. Calories = protein × 4 + carbs × 4 + fat × 9.
Enter carbs excluding fiber and sugar alcohols. This sum excludes energy from other components.
Sources. Regulation (EU) No 1169/2011, Annex XIV.
Questions
How many calories are in a gram of protein?
4 kcal (17 kJ).
How many calories are in a gram of fat?
9 kcal (37 kJ).
How many calories are in a gram of carbs?
EU factors: carbs excluding polyols, 4 kcal/g; fiber, 2 kcal/g.
How many calories are in a gram of alcohol?
7 kcal (29 kJ).
