15cm square tin to 15cm round tin
Multiply every ingredient by
×0.79
A 15cm round tin (6in) has 21% less area than a 15cm square tin (6in). Same depth of cake, less mixture.
| In the recipe | For your tin |
|---|---|
| 100g | 79g |
| 250g | 196g |
| 3 eggs | 2.4 eggs |
Paste your recipe into the scaler, already set to ×0.79. It rounds everything sensibly and tells you what to do with part of an egg.
The working
15cm square tin: 225cm² of base. 15cm round tin: 176.71cm². 176.71 ÷ 225 = 0.79. This assumes both tins are the same depth.