Portion guide

Cake portion guide

Whether it is for a wedding, birthday or other celebration the last thing you want is to present the cake, cut it up and then find you don’t have enough cake to go round all of your guests! Use our cake portion guide below to calculate how big your basic cake needs to be depending on how many slices you are going to need. Cake portion sizes are worked out in approx 2 inch square portions.

Please bear in mind that portion sizes can be different person to person and the details shown below should be taken as a rough guide only and are based on what we consider to be average cake portions. If you want a novelty shaped cake then we can discuss with you the number of portions we would expect to get from the cake at the time we discuss the design with you.

Cake Portion guide fruit

Size Round Square
13 cm (5in) 16 25
15cm (6in) 25 36
18cm (7in) 36 49
20cm (8in) 49 64
23cm (9in) 64 84
25cm (10in) 84 100
28cm (11in) 100 121
30cm (12in) 120 144
36cm (14in) 144 196
41cm (16in) 196 256

Cake Portion guide sponge

Size Round Square
13 cm (5in) 8 12
15cm (6in) 12 18
18cm (7in) 18 24
20cm (8in) 24 32
23cm (9in) 32 42
25cm (10in) 42 50
28cm (11in) 50 61
30cm (12in) 61 72
36cm (14in) 72 98
41cm (16in) 98 128
Cake portion guide

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