Scale up
4 servings to 6
Multiply ingredient quantities by 1.5.
Cook the right amount
Recipe Serving Size Calculator
Change a recipe from its original servings to the number you need, with every ingredient scaled in one pass.
How it works
New servings ÷ original servings
That division creates one multiplier for every scalable ingredient. Moving from 4 servings to 6 gives 6 ÷ 4 = 1.5×.
Scale down
8 servings to 2
Multiply ingredient quantities by 0.25.
Fractions
½ cup at 1.5×
The scaled amount is ¾ cup.
What needs extra judgement?
Salt, spices, chilli, and extracts often taste better when increased gradually. Cakes and breads may need leavening adjustments, and a larger batch can require a different pan or more than one pan.
FAQ
Recipe scaling questions
Can I enter fractions?
Yes: use 1/2, 1 1/2, ½, or a decimal.
Does cooking time scale too?
Not directly. Batch depth, cookware, and cooking method all matter, so check doneness using the recipe’s cues.
How should I scale eggs?
For awkward fractions, whisk the egg and weigh the quantity needed.
Save the recipe after scaling
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