Recipe Scaler Calculator Formula

Understand the math behind the recipe scaler calculator. Each variable explained with a worked example.

Use the Recipe Scaler Calculator

Formulas Used

Scaled Ingredient Amount

scaled_amount = ingredient_amount * scale_factor

Scale Factor

multiplier = scale_factor

Variables

VariableDescriptionDefault
original_servingsOriginal Recipe Servings4
desired_servingsDesired Servings10
ingredient_amountIngredient Amount2
scale_factorDerived value= desired_servings / original_servingscalculated

How It Works

How to Scale a Recipe

Divide the desired servings by the original servings to get a multiplier. Apply it to every ingredient.

Formula

Scale Factor = Desired Servings / Original Servings

Scaled Amount = Original Amount x Scale Factor

Worked Example

A recipe serves 4 and calls for 2 cups of flour. You need 10 servings.

original_servings = 4desired_servings = 10ingredient_amount = 2
  1. 01Scale factor = 10 / 4 = 2.5
  2. 02Scaled flour = 2 x 2.5 = 5.0 cups

Ready to run the numbers?

Open Recipe Scaler Calculator