Pan Size Converter
Converting 9-inch round pan to 8x8-inch square pan? Find out exactly how to scale your recipe and adjust bake time.
Units
Recipe scaling
scale ingredients up × 1.01
Area ratio: 64 / 63.62 sq in
If you scale the recipe
Keep the original temperature and bake time
Area scaling keeps the batter depth similar. Start checking doneness about 5 minutes early.
If you keep the full batch
The full batch keeps a similar depth
Keep the original temperature and begin checking at the original bake time.
Popular conversions
9-inch round pan to 8×8 square pan: practical conversion
The target has 1.01× the base area of the original. Scale the ingredients by that amount to keep batter depth close to the original; the shallower-batter comparison below applies only when you keep the full batch.
| Original recipe | Target-pan amount | Practical handling |
|---|---|---|
| 200 g flour | 201 g | Weighing keeps the scaled amount precise. |
| 3 large eggs | About 3.02 eggs | Beat the eggs, then weigh about 151 g of beaten egg. |
| 1 cup liquid or sugar | 1.01 cups (about 1 cup) | Use a measuring cup for liquids; weigh dry ingredients where possible. |
If you keep the full batch: shallower batter
With the same 4 cups of batter, the layer is about 0.91 in (2.31 cm) deep in the 9-inch round pan, versus 0.9 in (2.29 cm) in the 8×8 square pan.
Bake-time starting point
For a scaled batch, keep the original temperature and time, then start checking about 5 minutes early. For a full batch in the target pan, plan on about 25–30 minutes for a brownie or cake with a similar original bake time. Pan material, recipe density, and the intended texture can shift the final time.
What Matters for This Conversion
- - 9-inch round is almost equal to 8x8 square.
- - Area parity is more important than pan shape alone.
- - Depth changes still drive timing and browning differences.
FAQ
Is a 9-inch round the same as an 8x8 square?
Very close in area, so it is a common 1:1 substitute.
Does shape change texture?
Edges and corners can brown differently across shapes.
Should I alter bake time?
Usually only slightly, then adjust by doneness checks.
What about springform vs fixed round?
Area math stays similar; leakage and insulation differ.