8-Inch to 9-Inch Round Pan Converter

8-Inch to 9-Inch Round Pan Converter

Need to convert an 8-inch round cake recipe to fit a 9-inch round pan?
This simple calculator adjusts the recipe amount using the correct
volume difference so your cake bakes evenly without overflowing.

Quick fact: A 9-inch round pan holds about 25% more batter than an 8-inch pan.

Need the Opposite Conversion?
9-Inch to 8-Inch Round Pan Converter

8-Inch to 9-Inch Round Pan Conversion Chart

• Multiply any 8-inch recipe amount by 1.265
• Example: 2 cups batter → 2.53 cups (about 25% more)
• Example: 500 g batter → 632.5 g (about 25% more)
• Example: 1.5 cups frosting → 1.90 cups (about 25% more)

Formula
new amount = original amount × 1.265

Beginner-Friendly Explanation
A 9-inch round pan is about 25% bigger than an 8-inch pan.
That means you need about one-quarter more batter than your recipe makes.
Just type in the amount your recipe uses, and this tool tells you the new amount.

Use this converter anytime you need to scale an 8-inch round cake recipe to a 9-inch pan.