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Exact Geometric Conversion AnswerPublished: Jan 1, 2026Updated: Nov 12, 2026

Convert 10-Inch Round Cake Pan to 9x13-Inch Rectangular Quarter-Sheet Pan: Exact Scaling Multiplier & Bake Time

To convert a recipe written for an 10-Inch Round Cake Pan (78.54 in², 11 cups capacity) to an 9x13-Inch Rectangular Quarter-Sheet Pan (117 in², 14 cups capacity), multiply all ingredient quantities by 1.49x (by surface area) or 1.27x (by total rim volume).
Surface Area Multiplier1.49xRecommended for cakes
Total Volume Multiplier1.27xFor deep casseroles
Unscaled Fill Depth1"(50% pan capacity)
Baking Time Delta0%Based on batter thickness

✅ Direct 1:1 Swap Compatible (No Ingredient Scaling Mandatory)

The 10-Inch Round Cake Pan batter fills the 9x13-Inch Rectangular Quarter-Sheet Pan safely to 50% capacity (1" deep). You can bake without scaling ingredients, but ensure you adjust baking time as calculated below.

Live Recipe Scaler Widget

Scales recipe quantities automatically using the exact geometry multiplier (1.49x).

IngredientOriginal (Source)Scaled (1.49x Target)
All-Purpose Flour
cups
2.98 cups
Granulated Sugar
cups
1.49 cups
Unsalted Butter
cups
0.74 cups
Add USDA Ingredient:

Side-by-Side Geometry & Batter Capacity: 10-Inch Round Cake Pan vs. 9x13-Inch Rectangular Quarter-Sheet Pan

Pan Metric10-Inch Round Cake Pan (Source)9x13-Inch Rectangular Quarter-Sheet Pan (Target)Ratio / Variance
Surface Area78.54 in²117 in²1.49x
Total Rim Capacity11 cups14 cups1.27x
Recommended 65% Batter Fill7 cups9 cups+2.00 cups
Pan Rim Height2"2"0"
Default MaterialAnodized AluminumAnodized AluminumHeat Absorption Delta

Oven Temperature & Bake Time Adjuster

Using Pyrex Glass or Dark Nonstick Pan?Dark and glass pans absorb more heat, requiring a 25°F temperature drop.
Adjusted Temp350°F(177°C)
Estimated Time~30 min(Standard)

High-Altitude Baking Physics Adjuster

Atmospheric pressure decreases with elevation, accelerating evaporation and causing cakes to collapse.

Baking Powder / Soda-25%Prevents structure collapse
Sugar Reduction-1 tbsp/cupStrengthens batter cell walls
Extra Liquid+2.5 tbsp/cupOffsets rapid evaporation
Oven Temp Increase+20°FSets crumb structure faster
Baker's Knowledge Base

Frequently Asked Questions: 10-Inch Round Cake Pan to 9x13-Inch Rectangular Quarter-Sheet Pan

Thermodynamic & Kitchen FAQ

To convert from a 10-Inch Round Cake Pan (78.54 sq in) to a 9x13-Inch Rectangular Quarter-Sheet Pan (117 sq in), multiply all ingredient amounts (flour, sugar, butter, eggs, liquids) by 1.49x. If your recipe calls for 2 cups of flour, you would use 2.98 cups. If eggs cannot be easily divided, whisk the egg and measure by weight or tablespoon.

Other Conversions for 10-Inch Round Cake Pan