Baking Pan Size Converter
Recipe calls for a 9-inch round but you only have an 8-inch square? Convert between any pan shapes and sizes. We calculate the area ratio and tell you exactly how to adjust your ingredients.
Original Pan (Recipe Calls For)
Area
63.6 in²
Your Pan (What You Have)
Area
50.3 in²
Adjustment Multiplier
0.79×
Scale all ingredients by 0.79
Example: 1 cup flour
0.79 cups
Example: 2 eggs
1.6 eggs
Baking time
Adjust ↓
Common Pan Conversions
| Recipe Pan | Substitute With | Multiplier |
|---|---|---|
| 9-inch round | 8-inch square | 1.01× (nearly identical) |
| 9-inch round | 8-inch round | 0.79× (reduce by ~20%) |
| 9×13 rectangle | Two 9-inch rounds | 0.92× per pan |
| 9×13 rectangle | Three 8-inch rounds | 0.62× per pan |
| 10-inch round | 9-inch square | 1.03× (nearly identical) |
| 12-cup muffin | 9×13 rectangle | 0.54× per muffin |