Scale any recipe up or down — add ingredients, set your target servings, get exact amounts
💡 Why This Matters Cooking for 2 instead of 4, or doubling a recipe for a crowd? Every ingredient needs to scale by the same ratio, and doing that math by hand for a long ingredient list is tedious and error-prone. Enter your recipe once and scale it instantly to any serving size.
Leaveners like baking powder don't always scale perfectly — many bakers cut the leavener by about 10-15% when tripling or quadrupling a recipe, since too much can make a large batch taste bitter or rise unevenly.
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Recipe scaling works off a single ratio: your target servings divided by the recipe's original servings. That ratio is then applied to every ingredient's quantity — so if you're going from 4 servings to 6, the ratio is 1.5, and every ingredient amount gets multiplied by 1.5. This calculator does that multiplication across your whole ingredient list at once, so you don't have to do the math by hand for each line.
Each scaled amount keeps the original unit (cups stay cups, tablespoons stay tablespoons) — this calculator doesn't convert units, only quantities. If a scaled amount comes out awkward (like 1.33 cups), consider rounding to the nearest practical measurement, or switching that ingredient to weight for more precision.
Most ingredients scale linearly, but a few don't behave predictably at extreme ratios. Leaveners (baking powder, baking soda, yeast) and salt are the classic exceptions — many bakers pull back slightly on these when tripling or quadrupling a recipe. Cooking and baking times also don't scale proportionally; a doubled batch usually needs more time, not exactly double.
Enter your original recipe's ingredients and servings once, then adjust the target servings any time you need to cook for a different group size — the scaled list updates instantly. Great for meal prep, adjusting a family recipe for a dinner party, or shrinking a recipe down for a smaller household.
Example: A recipe serves 4 and calls for 2 cups flour. You need it for 6 people. Ratio: 6 ÷ 4 = 1.5. Scaled flour: 2 × 1.5 = 3 cups. Every other ingredient in the recipe scales by that same 1.5 ratio.
Mostly yes for things like flour, sugar, and liquids — they scale linearly. But leaveners (baking powder, baking soda, yeast), salt, and spices don't always scale 1:1 at large multiples; professional bakers often reduce leavener slightly for big batches.
Yes, by weight — one large egg is about 50g, so half is 25g of beaten egg. This scaler shows the math, but you'll need to crack the egg into a bowl, whisk it, and measure out the right weight or volume.
Often yes, but not proportionally — doubling a cake recipe doesn't mean doubling the bake time. Larger volumes typically need more time at the same temperature, while smaller portions often need less. Watch for visual/texture doneness cues rather than relying on the original time.