Recipe Scaler

Paste your ingredient list, choose how many servings you want, and every quantity is recalculated instantly — including fractions like 1½ and ¾.

Tip: start each line with a number. Words without quantities (like “a pinch of salt”) are kept unchanged.

Scaled recipe

How recipe scaling works

To resize a recipe, every ingredient is multiplied by the same factor — the new servings divided by the original servings. Doubling a recipe (4 → 8 servings) uses a factor of 2; halving it uses 0.5. This tool reads the number at the start of each line, including mixed fractions like 1 1/2, and rewrites the amount as a tidy fraction where possible.

A few things to keep in mind when scaling: seasonings, leavening (baking soda/powder) and strong spices don't always scale linearly — taste and adjust. Baking times change less than quantities, and pan sizes matter, so a doubled cake may need a larger tin rather than twice the time. For converting the scaled amounts between cups, grams and ounces, use our ingredient converters.