Cake pan conversion chart: scale a recipe to a different pan

Recipe calls for an 8-inch pan but yours is 9 inches? A 9-inch round pan has 27% more area than an 8-inch one. Multiply every ingredient by the factor in the chart and the batter will bake at the same depth.

How to use it: find the recipe's pan in the left column and your pan along the top. The number is what you multiply each ingredient by. Example: 8-inch to 9-inch → ×1.27; 2 cups of flour become about 2½ cups.

Round cake pans (diameter)

Recipe ↓ · Yours →	6″	7″	8″	9″	10″	11″	12″
6″	×1.00	×1.36	×1.78	×2.25	×2.78	×3.36	×4.00
7″	×0.73	×1.00	×1.31	×1.65	×2.04	×2.47	×2.94
8″	×0.56	×0.77	×1.00	×1.27	×1.56	×1.89	×2.25
9″	×0.44	×0.60	×0.79	×1.00	×1.23	×1.49	×1.78
10″	×0.36	×0.49	×0.64	×0.81	×1.00	×1.21	×1.44
11″	×0.30	×0.40	×0.53	×0.67	×0.83	×1.00	×1.19
12″	×0.25	×0.34	×0.44	×0.56	×0.69	×0.84	×1.00

Square and rectangular pans

To go from a round pan to a square or rectangular one (or back), compare areas. This chart shows the round pan each one matches:

Pan	Area	Same as a round pan of
8 × 8 in square	64 in²	9.0 in
9 × 9 in square	81 in²	10.2 in
11 × 7 in baking dish	77 in²	9.9 in
9 × 13 in baking pan	117 in²	12.2 in
10 × 15 in jelly roll pan	150 in²	13.8 in
12 × 17 in half sheet	204 in²	16.1 in

Example: a recipe for a 9-inch round pan (64 in²) baked in a 9 × 13 pan (117 in²): 117 ÷ 64 = ×1.84.

Tips when changing pans

Eggs: round to the nearest whole egg; if you get 2.5, use 3 small or 2 large.
Baking time: depends on batter depth, not quantity. At the same depth the time is similar; check 5–10 minutes early in shallower pans.
Baking powder and salt: scale them like everything else.

Recipe in grams? See the cups to grams chart.

Rather skip the math? With Recipe Tailor you paste or snap a recipe and it scales itself to your servings or your pan.

Get it free on Google Play