"Birthday cake" is not a variety of cake, and there are too many variables to be able to give any sort of reasonable answer. Specify what sort of cake you have for your birthday, and a more specific answer can be provided.
About 350 calories per serving.
depends on what else is in it and how big
There are 330 calories in one slice of birthday cake from Publix.
There are 10000 calories in an American cake There are 1000 calories in an English cake
12,000 calories in the whole cake
235
1 jaffa cake has about 40-50 calories.
350 calories
about 294 calories
Figis Chocolate Mousse Cake has 150 calories.
There are about 1,500-2,500 calories in a full chocolate cake, depending on the size of the cake and the recipe used.
Depending on the flavor, there are about 240-340 calories in 1 slice of Blizzard cake.
about 260 calories per slice.
45