25cm square tin to 23cm round tin
Multiply every ingredient by
×0.66
A 23cm round tin (9in) has 34% less area than a 25cm square tin (10in). Same depth of cake, less mixture.
| In the recipe | For your tin |
|---|---|
| 100g | 66g |
| 250g | 166g |
| 3 eggs | 2 eggs |
Paste your recipe into the scaler, already set to ×0.66. It rounds everything sensibly and tells you what to do with part of an egg.
The working
25cm square tin: 625cm² of base. 23cm round tin: 415.48cm². 415.48 ÷ 625 = 0.66. This assumes both tins are the same depth.