Below are some approximate servings based on cake size:
| Size in Inches | Fruit Cake Round | Fruit Cake Square | Sponge Cake Round | Sponge Cake Square |
| 6 | 27 | 36 | 13 | 18 |
| 7″ | 37 | 49 | 18 | 24 |
| 8″ | 48 | 64 | 24 | 32 |
| 9″ | 61 | 81 | 30 | 40 |
| 10″ | 75 | 100 | 37 | 50 |
| 11″ | 91 | 121 | 45 | 60 |
| 12″ | 108 | 144 | 54 | 72 |
The serving size is based on the cake being cut buffet-style.