Cake pan conversion calculator
Scale batter between round and rectangular pans using internal dimensions, fill depth and pan count.
Straight-sided round and rectangular pans, up to 100 source or target pans. Sloped tins and baking-time predictions are not included. Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.
Your result
How to use Cake pan conversion calculator
- Enter the measurements and assumptions for this recipe or plan.
- Review the calculated quantities and their stated basis.
- Download the report and verify it against your measured result.
Useful next steps
Compare filled volumes
Use intended batter depth rather than total pan height. At the same depth, moving from a 20 cm round tin to a 24 cm round tin multiplies batter by 1.44.
Scale every ingredient consistently
The multiplier applies to the complete original recipe. Different depths and numbers of pans are included. Baking time, rise and pan overflow clearance still depend on the recipe.
Save the result
Download CSV and a text or JSON report with the calculation and its assumptions. Processing stays on your device. Check measurements and selected units before using the result.