Free Kitchen Tool
Recipe Scaler
Cooking for a different crowd? Set your original and desired servings, type in your ingredient amounts, and every quantity rescales instantly — rounded to kitchen-friendly fractions.
Scale your recipe
Scale factor
1.5×
Scaled amounts round to the nearest practical kitchen fraction (⅛, ¼, ⅓, ½, ⅔, ¾). Leave the unit or name blank if you only want to scale numbers.
How scaling works
Resizing a recipe is simple multiplication: the scale factor is your desired servings divided by the original servings, and every ingredient quantity is multiplied by that same factor. Doubling a 4-serving recipe to 8 uses a factor of 2; going from 4 to 6 uses 1.5. This is the standard method taught in cooking references and used by recipe software.
What doesn't scale by the same factor — so use judgment:
- Cooking time and temperature stay roughly the same for most dishes — a bigger batch mostly needs a bigger pan, not a proportionally longer bake. Check for doneness rather than trusting a scaled timer.
- Pan size should match the new volume; a scaled cake batter in the original pan will overflow or bake unevenly.
- Salt, spices, leavening (baking soda/powder), and yeast often need a lighter hand when scaling up — many cooks add these to taste rather than strictly by the factor.
The math here is exact; these caveats are why a scaled recipe is a strong starting point, not a guarantee. Nothing you enter leaves your browser.