Birthday cake is a cake served to someone on his birthday. Birthday cakes are usually decorated with a person's name and carry a surviving message. The wax is equal to the number of years a person has lived also placed on the cake. There is also a tradition to put an extra candle to bring good luck.

In ancient times, most birthday cakes are round. Association of religious belief scholars and technical encouragements for the same. Some scholars argue that cakes in the ancient world are related to the annual cycle. This cake shape shape is preferred as representing the nature of the life cycle. Most special, sun and moon.