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Calories per serving

Divide a recipe’s total calories by the number of servings, with an optional per-100 g view.

Built and maintained by The NumberPrism Editorial TeamEditorial policy

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kcal
g

Leave at 0 to skip the per-100 g row.

Results update as you type. The formula and assumptions are explained below the calculator.

Calories per serving

500 kcal

Total recipe calories2,000 kcal
Servings4
Calories per 100 g250 kcal
Calories in half a serving250 kcal

Assumes equal portions and a calorie total you trust. Weighing the finished dish gives more accurate per-100 g values; cooking losses and uneven serving sizes change the real numbers.

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What does this tool do?

The calories in a portion are the recipe total divided by the number of equal servings. If you weigh the finished dish, the calculator also gives calories per 100 g, which is useful when portions are cut unevenly.

The Formula

Calories per serving = total calories ÷ servings; calories per 100 g = total calories ÷ cooked weight × 100

Frequently Asked Questions

What if the servings are uneven?

Use the cooked weight and the per-100 g figure, then weigh each portion. This is more accurate than dividing by an estimated number of servings.

Do I use raw or cooked calories?

Use the calorie total for the recipe as eaten, and divide by the number of portions actually served. If you track ingredients raw, account for water lost or gained during cooking.