Recipe Scaling Basics: Servings, Pans, and Time
Linear serving multipliers, pan area changes, and why oven time does not scale with batch size.
One Multiplier for Ingredients
Multiply every ingredient by desiredServings ÷ originalServings when you only change headcount—not pan size.
Pan Geometry Is Different Math
When you move batter to a wider or narrower pan, compare floor areas. A 9-inch round holds ~27% more than an 8-inch round.
Time does not scale linearly
Thicker or thinner layers change bake time even when ingredient weights are correct.