Meal Calorie Calculator
Calories from macros in a meal.
Enter your values
ⓘ Live results
Results
- Total calories
- 542 kcal
- From protein
- 140 kcal (26%)
- From carbs
- 240 kcal (44%)
- From fat
- 162 kcal (30%)
- From alcohol
- 0 kcal
Quick answer
Protein and carbs give 4 kcal per gram, fat 9 and alcohol 7 — adding them gives total meal calories.
kcal = 4P + 4C + 9F + 7A
How to use the Meal Calorie Calculator
- 1Read the macros from the nutrition label.
- 2Enter grams of each macronutrient.
- 3Read total calories and the split.
Worked example
Using the values the calculator loads with:
Inputs
- Protein35 g
- Carbohydrate60 g
- Fat18 g
- Alcohol0 g
Results
- Total calories542 kcal
- From protein140 kcal (26%)
- From carbs240 kcal (44%)
- From fat162 kcal (30%)
- From alcohol0 kcal
Frequently asked questions
Why do labels differ slightly?
Manufacturers may use Atwater specific factors or round values.
Does fibre count?
Fibre contributes about 2 kcal/g; most labels already account for it.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.