Recipe Portion & Calorie Calculator
Enter a recipe's total calories and serving count to see calories per serving, then change the serving count to see how the per-serving amount and portion size scale.
Recipe portion & calorie calculator
How recipe scaling works
A recipe's total calorie count is fixed by its ingredients — scaling the number of servings doesn't change the total calories in the dish, only how many pieces it's cut into. Doubling servings without doubling ingredients halves the calories in each portion, while keeping ingredients the same and reducing serving count raises the calories per serving.
This is also the fastest way to right-size a recipe for a different group: enter the recipe's original gram weight per serving, change the serving count, and the calculator scales the portion weight proportionally — useful for scaling a 6-serving recipe up for a dinner party of 10, or down to single-serving meal-prep portions.
Frequently Asked Questions
How do I calculate calories per serving from total recipe calories?
Divide the total calories for the whole recipe by the number of servings it makes. If a recipe totals 2,400 calories and makes 6 servings, each serving is 400 calories. Change the serving count and the per-serving figure changes proportionally — the total calories in the dish don't change, only how it's divided.
Does cutting a recipe in half also halve the calories per serving?
No — halving a recipe halves the total calories, but the calories per serving stay the same as long as you also halve the number of servings. If you halve the recipe but keep the serving count the same, each serving will have roughly half the calories of the original.
Is nutrition information on recipes always exact?
No, it's an estimate. Nutrition figures depend on exact brands, cut sizes, and how precisely ingredients are measured, so treat calculated values as a close approximation rather than a lab-verified number — useful for planning, not for strict medical dosing.
Read the Guide Behind the Numbers
The reference tables and explanations this calculator is built on.
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