Pan Size Converter
Converting 9x13-inch pan to 9x5 loaf pan? Find out exactly how to scale your recipe and adjust bake time.
Units
Recipe scaling
scale ingredients down × 0.38
Area ratio: 45 / 117 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
Split across about 2.6 9x5 loaf pans
One target pan makes the full batch about 2.6× deeper. If using one pan, lower the oven by about 25°F (15°C) and allow extra center-bake time.
Popular conversions
9×13 pan to 9×5 loaf pan: practical conversion
The target has 0.38× the base area of the original. Scale the ingredients by that amount to keep batter depth close to the original; the deeper-batter comparison below applies only when you keep the full batch.
| Original recipe | Target-pan amount | Practical handling |
|---|---|---|
| 200 g flour | 77 g | Weighing keeps the scaled amount precise. |
| 3 large eggs | About 1.15 eggs | Beat the eggs, then weigh about 58 g of beaten egg. |
| 1 cup liquid or sugar | 0.38 cups (about 1/2 cups) | Use a measuring cup for liquids; weigh dry ingredients where possible. |
If you keep the full batch: deeper batter
With the same 4 cups of batter, the layer is about 0.49 in (1.25 cm) deep in the 9×13 pan, versus 1.28 in (3.26 cm) in the 9×5 loaf 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 35–45 minutes for a quick bread that takes about 25–30 minutes in the original shallow pan. Pan material, recipe density, and the intended texture can shift the final time.
What Matters for This Conversion
- - A 9x5 loaf pan has much less area than a 9x13.
- - An area-scaled batch keeps a similar depth; a full batch needs multiple loaf pans.
- - Avoid filling loaf pans over about 2/3 to 3/4.
FAQ
Can a single 9x5 loaf hold a full 9x13 cake recipe?
Usually no. Scale down or split across multiple loaf pans.
Do loaf pans bake slower?
A properly scaled batch should bake similarly. A full batch in one loaf pan is too deep, so split it across pans rather than relying on extra bake time.
How full should loaf pans be?
Around 2/3 to 3/4 full is safer for rise and even baking.
Do I reduce heat for loaf pans?
Keep the original temperature for a scaled batch. Lower it only if you deliberately use a deeper full batch, and monitor the center closely.