🍕 Pizza Calculator
Estimate how many pizzas to order based on guest count, appetite level, and slices per pizza.
Kids are counted as about 60% of an adult portion. Appetite and leftover adjustments are shown in the result.
Shopping list
- Large pizzas5
- Soda (2L bottles)2
Info: Assume 8 slices per large pizza.
How many slices per person?
Plan 3 slices per adult on average. Hungry guests will eat 4. Most large pizzas have 8 slices.
Ordering tips
Round up — leftover pizza is rarely wasted. Mix at least one vegetarian option for groups of 8+.
How much pizza for 5, 10, 20, 50 or 100 people?
These are the exact quantities most home cooks and caterers use when planning pizza 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 pizza for 5 people? Plan for about 3 large pizzas (17 slices) — adjust with the calculator above for kids, appetite, or leftovers.
- How much pizza for 10 people? Plan for about 5 large pizzas (33 slices) — adjust with the calculator above for kids, appetite, or leftovers.
- How much pizza for 20 people? Plan for about 9 large pizzas (66 slices) — adjust with the calculator above for kids, appetite, or leftovers.
- How much pizza for 50 people? Plan for about 21 large pizzas (165 slices) — adjust with the calculator above for kids, appetite, or leftovers.
- How much pizza for 100 people? Plan for about 42 large pizzas (330 slices) — adjust with the calculator above for kids, appetite, or leftovers.
Assume 8 slices per large pizza.
Pizza portions for 10, 20, 50, and 100 people
| Guests | Normal serving | Hungry crowd |
|---|---|---|
| 10 guests | 5 large pizzas (33 slices) | 5 large pizzas (40 slices) |
| 20 guests | 9 large pizzas (66 slices) | 10 large pizzas (80 slices) |
| 50 guests | 21 large pizzas (165 slices) | 25 large pizzas (199 slices) |
| 100 guests | 42 large pizzas (330 slices) | 50 large pizzas (397 slices) |
Frequently asked questions
How many pizzas for 20 people?
About 8 large pizzas covers 20 adults at 3 slices each.
How many pizzas for 50 people?
Around 19 large pizzas for 50 adults.