Choose the pan with the closest calculated area before changing the recipe amount.
Printable pan area chart
Baking Pan Conversion Chart
Use this chart to compare nominal pan dimensions and choose a close substitute before scaling batter.
The closest substitute depends on surface area. Larger target pans spread batter thinner; smaller target pans make it deeper.
Recipe pan
Pan you have
Batter amount
Calculator
Can I Use This Pan Instead?
Recipe calls for
Left pan
I want to use
Right pan
Use this much batter
--
Select both pans to calculate a substitution.
Recipe pan area
--
Your pan area
--
Area difference
--
Common pan areas
Conversion Chart
| Pan | Nominal size | Calculated area | Source note |
|---|---|---|---|
| 9 x 13 in rectangle | 9 x 13 in | 117.00 sq in | Nominal pan dimensions; area is calculated geometrically. |
| 8 x 8 in square | 8 x 8 in | 64.00 sq in | Nominal pan dimensions; area is calculated geometrically. |
| 9 x 9 in square | 9 x 9 in | 81.00 sq in | Nominal pan dimensions; area is calculated geometrically. |
| 8 in round | 8 in diameter | 50.27 sq in | Nominal pan dimensions; area is calculated geometrically. |
| 9 in round | 9 in diameter | 63.62 sq in | Nominal pan dimensions; area is calculated geometrically. |
| 9 x 5 in loaf | 5 x 9 in | 45.00 sq in | Nominal pan dimensions; area is calculated geometrically. |
Formula
How The Multiplier Is Calculated
Area is calculated from nominal pan dimensions. The batter multiplier is target area divided by source area.
- Rectangle and square: width x length.
- Round: pi x radius squared.
- Display values are rounded for readability.
target area
multiplier =
source area
Chart notes
How To Use The Chart
Area does not account for batter depth, pan material, or leavening behavior.
The print button keeps the chart available while you adjust the recipe.
Pilot pages