To determine how many pizzas you need for a certain number of people, a common and practical formula is: Number of pizzas = (Number of guests × 3 slices per person) ÷ 8 slices per large pizza This means you estimate about 3 slices per adult, and since a large pizza typically has 8 slices, you divide the total slices needed by 8 to get the number of pizzas to order
Example:
- For 20 people:
20 × 3 = 60 slices needed
60 ÷ 8 = 7.5 pizzas
So, order 8 pizzas
Additional considerations:
- Children usually eat fewer slices (about 2 slices per child)
- If you expect bigger appetites or no other food served, consider ordering a bit more.
- Large pizzas are generally more cost-effective and feed more people than smaller sizes
- For medium pizzas (usually 8 slices), the same formula applies but adjust slices per pizza accordingly
Summary:
- Adults: ~3 slices each
- Large pizza: 8 slices
- Formula: (Guests × 3) ÷ 8 = pizzas needed
- Round up to ensure enough pizza
This approach works for most parties and pizza styles
