23cm round tin to 28cm round tin
Multiply every ingredient by
×1.48
A 28cm round tin (11in) has 48% more area than a 23cm round tin (9in). Same depth of cake, more mixture.
| In the recipe | For your tin |
|---|---|
| 100g | 148g |
| 250g | 371g |
| 3 eggs | 4.4 eggs |
Paste your recipe into the scaler, already set to ×1.48. It rounds everything sensibly and tells you what to do with part of an egg.
The working
23cm round tin: 415.48cm² of base. 28cm round tin: 615.75cm². 615.75 ÷ 415.48 = 1.48. This assumes both tins are the same depth.