18 cm / 7 in square vs Loaf 23 × 13 cm / 9 × 5 in
| 18 cm / 7 in square | Loaf 23 × 13 cm / 9 × 5 in | |
|---|---|---|
| Size | 18 × 18 cm | 23 × 13 cm |
| Base area | 324 cm² | 299 cm² |
| Usual depth | 5 cm | 7 cm |
| Holds | 1.62 L | 2.09 L |
Can you swap them?
Swap without changing the recipe, but watch the oven. 18 cm / 7 in square has 8.4% more area, so a mixture written for Loaf 23 × 13 cm / 9 × 5 in sits about 92% as deep in it and browns sooner.
Nothing standard sits between these two, so this is the smallest change available in this shape.
Scaling the recipe
| Recipe written for | Baked in | Multiply by | Or leave it and get |
|---|---|---|---|
| 18 cm / 7 in square | Loaf 23 × 13 cm / 9 × 5 in | 0.92 | 108% of the depth |
| Loaf 23 × 13 cm / 9 × 5 in | 18 cm / 7 in square | 1.08 | 92% of the depth |
Multiply every ingredient, including the eggs — round to the nearest half egg and adjust the liquid rather than rounding a whole one up.
Baking time
A mixture 92% as deep is done earlier, not cooler. Leave the temperature alone, start testing at about 92% of the stated time, and let the skewer decide. Why depth sets the time and diameter barely does →
Frequently asked questions
Can I use a Loaf 23 × 13 cm / 9 × 5 in instead of a 18 cm / 7 in square?
Yes, with the mixture multiplied by 0.92. Loaf 23 × 13 cm / 9 × 5 in has 299 cm² of base against 324 cm², so an unscaled 18 cm / 7 in square recipe sits 108% as deep and bakes faster.
What is the difference between a 18 cm / 7 in square and a Loaf 23 × 13 cm / 9 × 5 in?
18 cm / 7 in square has a base area of 324 cm² and Loaf 23 × 13 cm / 9 × 5 in has 299 cm² — 18 cm / 7 in square is 8.4% larger. At their usual depths they hold 1.62 L and 2.09 L.
Do I need to change the baking time between a 18 cm / 7 in square and a Loaf 23 × 13 cm / 9 × 5 in?
Yes. Moving a Loaf 23 × 13 cm / 9 × 5 in mixture into 18 cm / 7 in square makes it 92% as deep, so start checking at about 92% of the stated time. Depth drives baking time far more than tin diameter does.
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- Loaf 21.5 × 11.5 cm / 8½ × 4½ in vs Loaf 23 × 13 cm / 9 × 5 in
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18 cm / 7 in square in full · Loaf 23 × 13 cm / 9 × 5 in in full · All tin comparisons · All baking tin sizes