Recipe Portion Scaling Calculator
Enter the original servings, target servings, and one ingredient amount to automatically calculate the scaled ingredient quantity.
Input Data
Results
At a glance:Enter the original servings, target servings, and one ingredient amount to automatically calculate the scaled ingredient quantity.
Formula
Scaled amount = ingredient amount × (target servings ÷ original servings).
Scaling factor = target servings ÷ original servings.
How to Use
- Enter the original recipe servings and your target servings.
- Enter the original amount of one ingredient.
- The calculator returns the scaled amount and the scaling factor.
FAQ
Do all ingredients scale by the multiplier?
Most linear ingredients (flour, water, sugar, meat) scale directly. But seasonings (salt, spices) can be a bit less than the multiplier since taste is non-linear; season to taste — this calculator gives the baseline.
Should cooking time scale too?
Not always. Bake time is non-linear with size — doubling a cake may need only slightly more time, not double; oven temperature usually stays. This tool scales ingredients only; use recipe experience for time.
Tiny amounts at 1 serving?
At small batches tiny items (like 1/4 tsp baking powder) are hard to measure. Make a larger batch and freeze portions, or accept approximation — minor errors barely matter in home cooking.
Why not just use per-serving amounts?
You can: per-serving = original ÷ original servings, then × target servings — same result. This tool uses the multiplier for a clearer overall view.
Different units for liquids and dry?
Yes. The multiplier is unitless, so g, ml, or teaspoons all work. Enter each ingredient's original amount and unit; output is the scaled amount in the same unit.
Does scaling affect texture?
With correct ratios texture is basically the same, but pan size and even heating matter, especially for frying. For large batches, cook in shifts rather than all at once.
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References
Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.