Formula
Scaled amount = original amount times new servings divided by original servings. Keep the same unit you started with.
Recipe Scaler
Resize any ingredient amount when changing the number of servings.
Formula
Scaled amount = original ingredient amount x new servings / original servings. The ratio is the part that matters.
Example
If 2 cups serves 4 people, scaling to 6 servings gives 3 cups. Scaling to 8 servings gives 4 cups.
Common mistake
Some ingredients do not scale perfectly by arithmetic, especially salt, spices, yeast, thickener and cooking time. Use the result as a starting point.