Recipe scaler

How to use

Scaling a recipe keeps the proportions between ingredients and changes only the amount of each one. The factor is the desired number of servings divided by the original one, and the same factor applies to every ingredient — from flour to the pinch of salt.

• Cook a recipe for a different number of people.
• Convert a family recipe into a commercial batch.
• Halve a recipe without guessing the quantities.

1. Enter how many servings the original recipe makes.
2. Enter how many servings you want to make.
3. Enter the quantity of one ingredient to see it scaled.
4. The result gives the factor and the scaled quantity.

Formula

Factor = desired servings ÷ original servings · Scaled quantity = quantity × factor

Example

A recipe for 4 turned into one for 6 has a factor of 1.5: 200 g of flour becomes 300 g.

Limitations

• Cooking time and pan size do not scale linearly; a doubled batter usually needs a longer bake at the same temperature.
• Salt, spices and leavening often need less than the calculated factor — taste and adjust.

Frequently asked questions