How many tiers of cake for 100?

Short answer

For 100 guests, a three-tier cake is the usual choice. It gives enough portions for everyone, with a little spare for seconds or for guests who want a bigger slice. A two-tier cake might be tight, so three is safer.

Think about how much cake each guest will actually eat. Some will want a small slice, others will ask for more. A three-tier cake is the standard for 100 guests because it offers a good balance of height and portions. The bottom tier is the largest and gives the most slices, the middle tier is for the middle of the crowd, and the top tier is often kept for the couple to freeze or enjoy later.

If you prefer a simpler look, a two-tier cake can work, but you may need to serve it with a separate sheet cake in the kitchen. That way everyone still gets a slice. Also consider how many guests will skip cake. Some people are full after dinner, so you might not need a slice for every single guest. But it is kinder to have a little extra than to run out.

A three-tier cake also gives you more room for decoration. You can use different flavours for each tier, which is a lovely surprise for guests. Just tell the caterer or venue how many guests you have, and they can help you judge the right size. For 100, three tiers is the dependable answer.