Recipe Scaler
Fractions like 1/2 and mixed numbers like 1 1/2 work.
Try other calculators
Cups to grams with densities.
Perfect roast every time.
Convert baking pan sizes.
Scale any recipe instantly
Set original and desired servings, paste your ingredient list — one per line — and every amount rescales to kitchen-friendly fractions. No math, no rounding errors, no retyping.
Frequently asked questions
How do I paste my recipe?
One ingredient per line, starting with the amount: '2 cups flour'. Fractions (1/2), mixed numbers (1 1/2) and decimals all work.
Do I need to change cooking time when scaling?
Baking time barely changes — check doneness early. Roasts scale by weight, not servings; use the Roast Time Calculator.
Why are amounts rounded to fractions?
Kitchens measure in fractions (1/4, 1/3, 1/2 cup), not decimals. We snap to the nearest kitchen-friendly fraction.
What if an ingredient has no amount?
Lines like 'salt to taste' pass through unchanged — only lines starting with a number get scaled.