23cm square tin to 25cm square tin
Multiply every ingredient by
×1.18
A 25cm square tin (10in) has 18% more area than a 23cm square tin (9in). Same depth of cake, more mixture.
| In the recipe | For your tin |
|---|---|
| 100g | 118g |
| 250g | 295g |
| 3 eggs | 3.5 eggs |
Paste your recipe into the scaler, already set to ×1.18. It rounds everything sensibly and tells you what to do with part of an egg.
The working
23cm square tin: 529cm² of base. 25cm square tin: 625cm². 625 ÷ 529 = 1.18. This assumes both tins are the same depth.