What are the standard wedding cake tier sizes?

Short answer

Standard wedding cake tiers are usually 6, 8 and 10 inches across, feeding about 10, 20 and 30 portions. A two tier cake serves around 30, and a three tier serves around 60.

Most bakers work with round tiers in set sizes. The most common are 6 inches, 8 inches and 10 inches in diameter. A single 6 inch tier serves about 10 portions, an 8 inch serves about 20, and a 10 inch serves about 30. These numbers are rough guides, as portion size depends on how thickly the cake is cut and whether it is served with dessert.

A two tier cake, usually 6 and 8 inches, serves around 30 guests. A three tier cake, usually 6, 8 and 10 inches, serves around 60. If you have more guests, bakers often add a fourth tier or use a larger base tier, such as 12 inches. Square tiers give more portions than round ones of the same width, so ask your baker for their exact portion chart.

Think about how many guests you actually need to feed. Some couples keep a small top tier for their first anniversary, but that is a personal choice, not a rule. Also remember that the top tier is often the most decorative, so it may not be the one you cut first. Your baker can advise on tier sizes based on your guest list and how you plan to serve the cake.