When to use this calculator
Scale a round-pan recipe by area while keeping approximately the same depth. Assumes round pans and similar batter depth. Baking time and temperature need separate judgement.
Explore the baking & dough calculators for other questions in this topic. For a related calculation, use the Round Cake Servings Calculator: Estimate equal portions from round cake area and chosen serving area.
PUTTING IT INTO PRACTICE
Recipe Pan Scaling: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Original pan diameter (cm) | 20 |
| New pan diameter (cm) | 24 |
| Result | 1.44 × |
- Check the input labels and enter the example values above.
- Apply the relationship: Ingredient multiplier = (new diameter ÷ original diameter)².
- The result is 1.44 ×, rounded for display.
How to interpret your result
Assumes round pans and similar batter depth. Baking time and temperature need separate judgement.
Baker’s percentages use flour as their denominator. Include the flour and water already present in a starter when calculating a whole dough. Scaling a pan recipe by area assumes similar batter depth.
Frequently asked questions
Why can baker’s percentages total more than 100%?
Flour alone is defined as 100%. All other ingredient percentages are measured relative to that flour mass.
How do I use the recipe pan scaling calculator?
Enter original pan diameter (cm), new pan diameter (cm). The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Ingredient multiplier = (new diameter ÷ original diameter)².
What should I check before using the result?
Assumes round pans and similar batter depth. Baking time and temperature need separate judgement.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
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