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How do I figure out what to increase in a cake recipe for bigger pan sizes? I have a cake recipe that uses two 8-inch round pans; how would I change the recipe to accommodate one 10-inch and one 14-inch round cake pans?

  • How can you have a recipe for 2 pans ? – Daniel E. Feb 26 at 14:12
  • @DanielE. It's a recipe that makes enough batter to fill two pans? – Kat Feb 27 at 3:28
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    @DanielE... typically for a 2-layer sponge of some kind? – Robin Betts Feb 27 at 4:47
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Assuming the depths of the pans are all the same, then the volume will vary as the square of their linear dimensions:

  • 8^2 + 8^2 = 64 + 64 = 128
  • 10^2 + 14^2 = 100 + 196 = 296
  • Ratio = 296/128 = 2.3125

Near enough, multiply original quantities by 2 1/3

  • Numbers above are for square not round pans. – Debbie M. Feb 26 at 15:02
  • @DebbieM. .. its a ratio, it makes no difference to the maths .. no point in multiplying everything by pi.. makes no difference to the answer .. they could be bunny-shaped, so long as they were all the same bunny-shape. – Robin Betts Feb 26 at 15:08
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    I shouldn’t think about math before coffee, you are correct the ratio would be the same. – Debbie M. Feb 26 at 15:16

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