Pan Size Converter
Adjust recipe quantities when using a different pan size. Enter your original and new pan dimensions.
Recipe Pan Size
Area: 63.6 sq in
Your Pan Size
Area: 50.3 sq in
Multiply all ingredients by
1.27x
Your pan is larger. Use 127% of each ingredient.
How It Works
Recipe scaling by pan size is based on the ratio of surface areas. A 9-inch round pan has ~63.6 sq in of area, while an 8-inch round has ~50.3 sq in — meaning you need about 79% of the ingredients. Keep baking time and temperature the same, but check for doneness a few minutes early with a smaller pan or a few minutes late with a larger one.