Cake Pan Conversion Table: Recipe scale factor by Original pan diameter
Reference table of recipe scale factor for Cake Pan Conversion across a range of original pan diameter values — exact, engine-computed figures you can read off at a glance.
Cake Pan Conversion Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Recipe scale factor
1.563
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Cake Pan Conversion Calculator
The Cake Pan Conversion Calculator works out your recipe scale factor in an instant. Enter original pan diameter and new pan diameter and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the original pan diameter.
- Enter the new pan diameter.
- Read off your recipe scale factor — the calculator updates automatically, with no button to press.
Formula
The Cake Pan Conversion Calculator uses the formula:
Recipe scale factor = (New pan diameter)^(2) ÷ (Original pan diameter)^(2)
Worked example
For example, with original pan diameter of 8 in and new pan diameter of 10 in, the recipe scale factor is 1.563.
| Original pan diameter | 8 in |
|---|---|
| New pan diameter | 10 in |
| Recipe scale factor | 1.563 |
|---|
Results are estimates for educational use, not professional advice.
Key terms explained
- Diameter
- The distance across a circle through its centre — twice the radius.
Frequently asked questions
Scale by the ratio of pan areas, which is the new diameter squared over the original squared. Going from 8 to 10 inches needs about 1.56 times the recipe.
Batter fills area, and area grows with the square of the diameter, so a slightly bigger pan needs much more batter.
Often yes. A larger, possibly thinner cake may bake faster, so check for doneness earlier.
For square pans, use the side length in place of the diameter; the area ratio still applies.
The Cake Pan Conversion Calculator uses the formula: Recipe scale factor = (New pan diameter)^(2) ÷ (Original pan diameter)^(2). For example, with original pan diameter of 8 in and new pan diameter of 10 in, the recipe scale factor is 1.563.
Enter the original pan diameter. Enter the new pan diameter. Read off your recipe scale factor — the calculator updates automatically, with no button to press.
Related guides
How to Calculate Cake Pan Conversion: Formula, Steps & Examples
Learn how to calculate Cake Pan Conversion — the formula explained step by step, with worked examples and a free calculator to check your answer.