Recipe Scaler
Enter the original and target servings, then your ingredients. Scaled amounts round to the nearest quarter for easy measuring.
Worked example
Scaling from 4 to 6 servings gives a factor of 1.5. Flour 2 cups becomes 3 cups, sugar 0.5 cup becomes 3/4 cup, and 3 eggs become 4 1/2.
Formula
Scale factor = target servings / original servings. Each scaled quantity = original quantity x factor, rounded to the nearest 0.25 for measuring spoons and cups. Seasonings, salt and leavening are often better adjusted to taste when scaling by more than 2x or less than 0.5x.
FAQs
Does cooking time change when I scale? Time depends on the size and thickness of what is in the pan, not the number of servings. A doubled batch in a bigger pan usually needs a similar time; check doneness as usual.
Why did my baking powder amount get a note? Leavening does not always scale perfectly linearly in very large batches. The quarter-rounding here keeps home-scale recipes (0.5x to 3x) measuring-friendly.
Estimates only. Figures are planning guides based on the stated assumptions, not professional advice. Verify quantities and prices before purchasing.