Serving Size Adjuster Formula

Understand the math behind the serving size adjuster. Each variable explained with a worked example.

Use the Serving Size Adjuster

Formulas Used

Adjustment Factor

adjustment_factor = ratio

Adjusted Amount

adjusted_amount = sample_amount * ratio

Percentage Change

percent_change = (ratio - 1) * 100

Variables

VariableDescriptionDefault
original_servingsRecipe Makes (servings)(servings)6
desired_servingsYou Need (servings)(servings)10
sample_amountSample Ingredient Amount3
ratioAdjustment ratio= desired_servings / original_servingscalculated

How It Works

How to Adjust Serving Sizes

Formula

Adjustment Factor = Desired Servings / Original Servings

Adjusted Amount = Original Amount x Adjustment Factor

This works for any ingredient in the recipe. Multiply every quantity by the same factor.

Worked Example

Adjust a recipe from 6 servings to 10 servings. One ingredient is 3 cups.

original_servings = 6desired_servings = 10sample_amount = 3
  1. 01Adjustment factor: 10 / 6 = 1.667.
  2. 02New amount: 3 x 1.667 = 5 cups.
  3. 03Apply the same factor to every ingredient.

Ready to run the numbers?

Open Serving Size Adjuster