Servings
Ingredients
About This Calculator
To scale a recipe, every ingredient is multiplied by the same factor: new servings ÷ original servings. If a recipe feeds 4 and you want 10, everything is multiplied by 2.5.
Watch out for non-linear scaling
- Baking: Leavening agents (baking soda, baking powder) don't always scale perfectly. When doubling, use about 1.75× the original leavening rather than exactly 2×.
- Salt and spices: Start with 75% of the scaled amount and adjust to taste.
- Cook times: Doubling a recipe rarely doubles the cook time — check for doneness early.
Frequently asked questions
How does this recipe scaler work?
Enter the original number of servings and your target servings. The recipe scaler calculates the ratio and multiplies every ingredient amount automatically, rounding to friendly kitchen fractions.
Can I scale a recipe up or down?
Yes. Set the new servings higher to scale up or lower to scale down — the scale factor and every adjusted ingredient amount update instantly as you type.
Do cooking times change when I scale a recipe?
Ingredient amounts scale linearly, but cooking times usually do not. Larger batches may need a little longer, so check for doneness rather than just following the original time.