23cm round tin to 25cm round tin
Multiply every ingredient by
×1.18
A 25cm round tin (10in) has 18% more area than a 23cm round 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 round tin: 415.48cm² of base. 25cm round tin: 490.87cm². 490.87 ÷ 415.48 = 1.18. This assumes both tins are the same depth.