Recipe Scaling Calculator
Scale any recipe up or down by entering the original number of servings and the desired number of servings.
Scale an Ingredient
Scale Factor
×2
4 servings → 8 servings
Scaled Ingredient
- Original (4 servings)
- 2 cups
- Scaled (8 servings)
- 4 cups
Recipe Scaling Formula
Scale factor = desired servings ÷ original servings. New quantity = original quantity × scale factor. Example: recipe serves 4, you want 10. Scale factor = 10 ÷ 4 = 2.5. Every ingredient is multiplied by 2.5.
Baking Notes
For baked goods, be cautious when scaling leavening agents (baking powder, baking soda, yeast) by more than 2×. Pan sizes and baking times also need adjustment for large batches.
Frequently Asked Questions
- Ingredient quantities scale linearly, but baking (especially leavening agents like baking powder and baking soda) does not always scale perfectly. Large batches may require adjustments to rising agents and baking time.
- Scale factor = 6 ÷ 4 = 1.5. Multiply every ingredient by 1.5. Example: 2 cups flour → 3 cups flour.