GlenCalc

Pan size converter

To keep the same depth (and roughly the same baking time), scale the recipe by the ratio of the pans’ areas.

Your answer

Multiply the recipe by1.84
Recipe pan area63.6 sq in
Your pan area117 sq in
  • A larger batch in a bigger pan may need a few minutes more; test for doneness.

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How we worked it out

Updated as you change the numbers.

  1. Round pan area = π × (diameter ÷ 2)². Factor = your pan’s area ÷ the recipe pan’s area.

Method and assumptions

Matching area keeps the batter depth the same. Two 9 in rounds (127 sq in) hold about the same as one 9 × 13 in pan (117 sq in).

Questions

How do I convert a 9 in round recipe to a 9 × 13 in pan?

Multiply it by about 1.84.

Sources

Method and figures checked on . Every worked answer on this page is covered by an automated test. Found a mistake? Tell us.

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