Baking Pan Conversion Calculator
Convert a recipe between different baking pan sizes and shapes with adjusted bake time, free and instant in your browser.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter your original pan length and width, and the new pan's.
- Read the area ratio to scale the recipe by.
How it works
Pan area = length × width; ratio = new area ÷ original area. Multiply each ingredient by the ratio.
Worked example
23×23 cm → 33×23 cm. Ratio ≈ 1.43× — increase ingredients by ~43%.
Tips
- Runs entirely in your browser. Your inputs are not saved or transmitted.
Frequently asked questions
Does bake time change?
Often yes — a thinner batter in a larger pan bakes faster, so check earlier.
Round pans?
Use π × r² for a round pan's area, then compare the same way.
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Cite this tool
Zerdly. (2026). Baking Pan Conversion Calculator. Retrieved from https://www.zerdly.com/tools/baking-pan-conversion-calculator/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.