🍰 Cake Serving Calculator

Find out what size cake or sheet you need based on guest count.

Adults

Kids

Appetite

Leftovers

Event type

Units

Kids are counted as about 60% of an adult portion. Appetite and leftover adjustments are shown in the result.

Estimate for 10 guests - Cake

Total needed

11 cake slices

Per person

1 slice per person

Suggested purchase

Order a quarter sheet (~20 servings)

Leftover plan

1 extra slices

Shopping list

Cakequarter sheet (~20 servings)
Candles / plates11

Info: 1 slice per person. Sheet cakes: ¼=20, ½=40, full=80.

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Sheet cake serving sizes

Quarter sheet: ~20 servings
Half sheet: ~40 servings
Full sheet: ~80 servings

How much cake for 5, 10, 20, 50 or 100 people?

These are the exact quantities most home cooks and caterers use when planning cake for a group. Portions assume a normal adult appetite with a small buffer for leftovers — bump up one level for hungry guests, sports crowds, or long events.

How much cake for 5 people? Plan for about 6 cake slices — adjust with the calculator above for kids, appetite, or leftovers.
How much cake for 10 people? Plan for about 11 cake slices — adjust with the calculator above for kids, appetite, or leftovers.
How much cake for 20 people? Plan for about 22 cake slices — adjust with the calculator above for kids, appetite, or leftovers.
How much cake for 50 people? Plan for about 56 cake slices — adjust with the calculator above for kids, appetite, or leftovers.
How much cake for 100 people? Plan for about 111 cake slices — adjust with the calculator above for kids, appetite, or leftovers.

1 slice per person. Sheet cakes: ¼=20, ½=40, full=80.

Cake portions for 10, 20, 50, and 100 people

Guests	Normal serving	Hungry crowd
10 guests	11 cake slices	11 cake slices
20 guests	22 cake slices	22 cake slices
50 guests	56 cake slices	56 cake slices
100 guests	111 cake slices	111 cake slices