cooking calculator

Recipe Scaler

Scale any ingredient up or down when changing serving counts.

Results

Multiplier
1.50
Scaled ingredient amount
3.00

How to use this calculator

  1. Enter the original serving count from your recipe.
  2. Enter the target serving count you need.
  3. Enter an ingredient amount; see the scaled amount and multiplier.

Inputs explained

Original servings
How many people the recipe currently serves.
Target servings
How many servings you want.
Ingredient amount
Quantity from the recipe in its original unit (cups, grams, tbsp, etc.).

How it works

We calculate a multiplier (target ÷ original) and apply it to your ingredient amount. Repeat for each ingredient to update the entire recipe in minutes.

The multiplier output helps you sanity-check the new amounts before you start cooking.

Formula

Multiplier = Target servings ÷ Original servings
Scaled amount = Ingredient × Multiplier

When to use it

  • Doubling or halving recipes for events or small households.
  • Scaling meal-prep batches while keeping ratios intact.
  • Adjusting cocktail or sauce recipes for different group sizes.

Tips & cautions

  • Keep the multiplier handy and apply it across every ingredient for consistent ratios.
  • Round to practical measurements (e.g., nearest 0.25 cup) unless baking precision is critical.
  • For pan size changes, combine this with the Pan Size Converter to keep thickness similar.
  • Does not adjust cook/bake times or temperatures.
  • Precision-heavy recipes (breads, pastries) may need exact weights rather than rounded volumes.
  • Single-ingredient at a time—repeat for each item in the recipe.

Worked examples

4 servings to 10

  • Multiplier = 10 ÷ 4 = 2.5
  • 2 cups of broth × 2.5 = 5 cups

12 cupcakes down to 6

  • Multiplier = 6 ÷ 12 = 0.5
  • 300 g flour × 0.5 = 150 g

Deep dive

This recipe scaler multiplies any ingredient by a servings-based multiplier. Enter original and target servings plus the ingredient amount to get the scaled quantity instantly.

Use it to halve, double, or batch recipes while keeping ratios intact. Round for convenience on stovetop dishes; stay precise for baking.

FAQs

Should I round the multiplier?
Feel free to round slightly for practical measurements, but keep the precise number for baking where ratios matter.
Does this adjust oven time?
No. Use the output to scale ingredients. Oven time depends on pan size and batter depth—check the notes in your recipe.
Can I scale the whole ingredient list at once?
Enter the multiplier once and apply it to each ingredient. Batch scaling is per-ingredient in this tool.
What about spices or yeast?
Spices and yeast often scale slightly less than linear for very large batches—use taste and experience to fine-tune.
Should I change oven temperature when scaling?
Usually no. Keep temperature the same and watch time based on batter thickness and pan size.

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Always double-check seasoning and baking times, especially when scaling dramatically.