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Recipe Scale Calculator

Scaling Factor = Target Servings ÷ Original Servings

Multiply all ingredients by this factor to scale your recipe up or down.

Easily resize recipes to match any party size, pan diameter, or batch requirement. Simply enter your ingredient list below, choose your scaling factor or serving size change, and see your new recipe quantities instantly.

Baking & Cooking Recipe Scaler

Option A: Scale by Servings
Option B: Direct Multiplier
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How Recipe Scaling Works

When doubling or halving a recipe, it's simple. But for specific numbers of servings, we use the formula:

Multiplier = Target Servings / Original Servings

Example: If a recipe yields 6 servings but you need to feed 15 people, the multiplier is 15 ÷ 6 = 2.5. Every ingredient in the recipe (like flour, eggs, water) must be multiplied by 2.5 to achieve the same taste and consistency.

Baking Scaling Tips

  • Baking is Chemistry: Liquid ratios are critical. If scaling up a cake recipe by 4x, you might need to adjust baking times, leavening agents, or pan size.
  • Weight vs. Volume: Always prefer weighing ingredients in grams rather than cups when scaling. Grams scale linearly without compaction errors.
  • Spices: Spices do not always scale linearly. For large scaling factors (e.g. 5x+), start with slightly less spice (like salt, cayenne pepper) and adjust to taste.

Frequently Asked Questions

How do you scale a recipe?
To scale a recipe, divide the target number of servings by the original number of servings to get the scaling factor (multiplier). Then, multiply each ingredient quantity in the recipe by this scaling factor.
How do I double or halve a recipe?
To double a recipe, set the scaling factor to 2. To halve a recipe, set the scaling factor to 0.5. Our online recipe scale calculator does this math instantly for all ingredients in your list.