How Many Cake Slices for 40 People?

Quick Answer

For 40 people, you need 40 slices. This provides about 40 servings, assuming 1 servings per person.

Estimated cost: $80 - $200

How We Calculate

We use the industry-standard formula for cake calculations:

Each person eats approximately 1 slices
Formula: 40 people × 1 servings ÷ 1 = 40 slices

Adjusting for Your Event

Use our interactive calculator above to fine-tune your order:

Light appetite: Reduce by 25% if guests had a recent meal or there are many other food options
Normal appetite: Standard calculation for typical party situations
Hungry guests: Increase by 25% for active groups, late-night events, or when cake slices are the main attraction

Tips for Ordering Cake Slices

Order 10-15% extra slices
Consider dietary restrictions (gluten-free, vegan)
Sheet cakes are more economical for large groups
Keep cake refrigerated until serving
Have a cake server and plates ready

Frequently Asked Questions About Cake

What size cake do I need for my party?

A 9-inch round cake serves 12-14 people. A half sheet cake (13x18) serves 36-40. A full sheet cake serves 70-80. Always order 10-15% more than your guest count.

How much cake per person?

Standard party slices are about 1x2 inches for layer cakes, or 2x2 inches for sheet cakes. Most adults eat one slice, so plan 1:1 with your guest count plus extras.

Should I order extra cake?

Yes! Order 10-15% more servings than guests. Some people take seconds, pieces break, and it's better to have leftovers than run short at a celebration.