Cake pan size converter
Moving a recipe to a different pan? Enter both pans and get the factor to scale the ingredients by.
Recipe’s pan
Area: 63.6 sq in
Your pan
Area: 64 sq in
Multiply every ingredient by
×1.01
Close enough to use the recipe as written. Check for doneness a few minutes early. Paste the recipe into the recipe scaler and enter this factor.
An inch wider is a lot more cake
Pan area grows with the square of the diameter. Drag the slider and compare a round pan with the 8-inch round most layer-cake recipes are written for.
100%
of the batter in an 8-inch round (dashed). A 8-inch pan is 0% wider, but holds 0% more.
Common pan areas
| Pan | Area (sq in) | vs 9-inch round |
|---|---|---|
| 6-inch round | 28.3 | ×0.44 |
| 8-inch round | 50.3 | ×0.79 |
| 9-inch round | 63.6 | ×1 |
| 10-inch round | 78.5 | ×1.23 |
| 8-inch square | 64 | ×1.01 |
| 9-inch square | 81 | ×1.27 |
| 9 × 13-inch rectangle | 117 | ×1.84 |
| 10 × 15-inch jelly roll | 150 | ×2.36 |
| 9 × 5-inch loaf | 45 | ×0.71 |
Questions cooks ask
How do I convert a recipe to a different pan size?
Compare the pans’ areas (for the same depth). Divide the new pan’s area by the old pan’s area and multiply every ingredient by that number.
Can I use an 8-inch square pan instead of a 9-inch round?
Yes. An 8-inch square is 64 sq in and a 9-inch round is 63.6 sq in, practically identical, so use the same recipe and time.
Is a 9-inch round twice an 6-inch round?
More than twice: area grows with the square of the diameter, so a 9-inch pan holds (9÷6)² = 2.25 times the batter of a 6-inch pan.
Does baking time change with pan size?
Depth matters more than area. Same depth, similar time. A deeper layer of batter needs longer and sometimes a 10–15 °C lower oven so the edges don’t overbake before the middle sets.