Baking Pan Size Converter
Baking in a different pan than the recipe calls for? Enter both sizes and get the multiplier for every ingredient, based on the pan's surface area.
Your details
Recipe pan
Your pan
Result
Scale every ingredient by
× 1.01
use 100.6% of each ingredient
- Recipe pan area
- 63.6 in²
- Your pan area
- 64.0 in²
- Thinner batter (under 1) bakes faster, so start checking a few minutes early.
Good to know: A 9-inch round pan holds about the same as an 8-inch square pan. The multiplier is about 1.01.
About this tool
Scale recipe ingredients when your pan differs from the one the recipe calls for, by comparing pan surface areas — round, square, or rectangular.
Formula
multiplier = your pan area ÷ recipe pan area. Round: area = π × (diameter ÷ 2)². Square: side². Rectangle: length × width.
Reference values
- 9-inch round ≈ 63.6 in²
- 8-inch square = 64 in²
- 9 × 13-inch rectangle = 117 in²
Questions people ask
How do I adjust a recipe for a different pan?
Divide your pan's area by the recipe pan's area, then multiply every ingredient by that number.
Do I change the baking time?
Usually a little. A thinner layer bakes faster, so start checking a few minutes early.
Can I use a smaller pan?
Yes, but scale the recipe down and keep the batter depth similar, or it may overflow or bake unevenly.
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How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it.
Spotted a mistake? Tell us and we'll check it. How we check our calculators