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Cups ↔ grams use the King Arthur ingredient weight chart. Ingredients without a cup weight stay in their own units. Baking times change with pan size.
Source: King Arthur ingredient weight chart (checked Sep 25, 2026). Scaling a cake? See the cake serving chart.
Multiply every ingredient by the new pan’s area divided by the old pan’s area. An 8 inch round to a 12 inch round is about 2.25 times the batter.
About 120 grams of all-purpose flour per cup, according to the King Arthur ingredient weight chart.
A cup measures volume. A cup of sugar weighs more than a cup of flour, so each ingredient needs its own grams-per-cup value.
Usually, yes. Bigger or deeper pans take longer. Start checking at the original time and keep going until a tester comes out clean.
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