Calculate the exact batter, frosting, and ingredients for any cake pan size. Works for round, square, or rectangular cakes with multiple layers.
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Never guess how much batter you need again. Our cake calculator determines exact ingredient quantities based on your pan size, shape, and number of layers.
Cake pan calculations are based on volume. A 9-inch round pan 2 inches deep holds about 127 cubic inches (its top surface measures about 63 square inches). By calculating pan volume and scaling a standard recipe, you can determine exact ingredient amounts for any size cake. This is the pan-volume method (V = πr²h), filling pans about two-thirds full; standard pan-capacity charts from references like Wilton and King Arthur Baking give the same batter volumes.
Round Pan Volume
A baker scales a recipe when substituting a round pan for the square pan the recipe calls for
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A cook verifies that batter fills a pan to the right depth to avoid overflow or a flat cake
Make exactly the right amount of batter - no excess to throw away.
Ensure even layers by calculating batter per pan.
Adapt any cake recipe to your specific pan size.
Measure the inside diameter for round pans, or the inside length/width for rectangular pans. Measure from one inside edge to the opposite inside edge.
Standard cake layers are 2 inches tall and pans are filled about two-thirds full. For a 9-inch round, that works out to roughly 5 cups of batter per layer. Our calculator adjusts this based on your specific pan.
Yes! A round pan and square pan with similar dimensions hold different volumes. A 9-inch round holds about 25% less than a 9-inch square. Our calculator handles these conversions.
Yes. A wider, shallower pan bakes faster and a deeper one slower. Keep the oven temperature the same, but start checking 5–10 minutes earlier for a larger pan and test with a skewer rather than trusting the original time.