Switching pan sizes? Get the exact batter volume difference, whether your current recipe will fit, and how to adjust baking time and temperature.
Original Pan (from recipe)
New Pan (what you have)
Results
Common Pan Volume Reference
Volume is what matters. When changing pan sizes, the key is matching batter volume. If your new pan holds less, your batter will overflow. If it holds more, the batter layer is thinner and will bake faster.
Time adjustment rule: Thinner batter (larger or shallower pan) = less time. Thicker batter (smaller or deeper pan) = more time. A rough rule: for every 25% change in volume ratio, adjust baking time by 10–15%. Always check doneness early with a toothpick.
Temperature rule: For smaller pans (thicker batter), lower the temperature by 25°F and increase time. For larger pans (thinner batter), keep temperature the same but check early.
⚠️ Time adjustments are estimates. Always test doneness with a toothpick or cake tester. Oven temperatures vary between models.