MasterTool

Pan Size Converter

Calculate pan size for your recipe.

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What this tool does

Calculate pan size for your recipe. Round pans with the same target batter depth; this does not predict baking time.

How to use the Pan Size Converter

  1. Enter or select original pan diameter (inches).
  2. Enter or select new pan diameter (inches).
  3. Read the calculated result; change any measurement to compare alternatives.

Formula

round-pan recipe multiplier=(new diameter/original diameter)^2
old
Original pan diameter (inches)
new
New pan diameter (inches)

Round pans with the same target batter depth; this does not predict baking time.

Worked example

For pan size converter, the following measurements illustrate the exact method: Original pan diameter (inches): 8; New pan diameter (inches): 10.

Inputs

  • Original pan diameter (inches)8
  • New pan diameter (inches)10

Result

  • Recipe quantity multiplier1.56

Results explained

Recipe quantity multiplier
Recipe quantity multiplier from the formula above. Round pans with the same target batter depth; this does not predict baking time.

Frequently asked questions

round-pan recipe multiplier=(new diameter/original diameter)^2

Round pans with the same target batter depth; this does not predict baking time.

No. Cooking time is a planning estimate only. Verify internal temperature with a thermometer and follow official food-safety instructions.

Weigh ingredients when possible, use the correct measuring-cup standard, and check recipe and equipment specifications.

No. Every input and calculation stays in your browser.