Compare pan areas
For round pans, area changes with the square of the diameter. The converter calculates the new-to-original area ratio so ingredient quantities can be scaled consistently.
Keep batter depth comparable
The ratio works best when the new pan has a similar depth and is filled to a similar level. A deeper or shallower layer changes baking time and structure.
Adjust baking with observation
Temperature may stay similar, but timing often changes. Begin checking earlier when layers are shallower and follow food-safety guidance for the recipe.
Practical checklist
- Scale weights rather than rounded cup measures where possible.
- Confirm the pan's usable internal dimensions.
