Recipe Scaler
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Multiply any ingredient amount by the ratio of new servings to original servings — scale a recipe up or down in one step.
Recipe & ingredient
Scaled amount
3
1.5× the original recipe
- Scale multiplier
- 1.5×
- New amount
- 3
Related calculators
Scaling ingredient amounts
Recipe scaling multiplies every ingredient by the same ratio: target servings ÷ original servings. If a recipe serves 4 and you need 6, the scale factor is 1.5 — every ingredient amount gets multiplied by 1.5, from the flour to a pinch of salt.
This works cleanly for most measured ingredients, but leavening (baking soda, baking powder, yeast) and spices do not always scale linearly — very large batches may need slightly less leavening per unit, and strong spices may need tasting adjustments. Pan size and bake time also change with volume and are not covered by simple scaling.
Example: a recipe serving 4 uses 2 cups of flour. Scaling to 6 servings gives a multiplier of 1.5 (6 ÷ 4), so you need 3 cups of flour (2 × 1.5). Scaling down to 2 servings uses a 0.5 multiplier for 1 cup.
Common questions
Does this work for baking recipes?
Yes for most measured ingredients, but leavening agents and pan size do not always scale linearly. Large batches of yeasted dough may need slightly less yeast per cup of flour — taste and texture are the final check.
Can I scale down to a single serving?
Yes — enter a target of 1 (or any number) below the original. The multiplier and scaled amount work the same in both directions.
Do I need to run this once per ingredient?
Yes, run the amount field once per ingredient in your recipe (or multiply each amount yourself by the multiplier shown, which stays the same for every ingredient in that recipe).