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Group Pizza Quantity Calculator

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A rough but honest estimate of how many pizzas to order for a group. Pick your group size, appetite, and pizza size, then nudge the slice counts if your crowd is different from the defaults.

How to use this tool

Inputs:
Adult and kid counts, slices per person, slices per pizza, and optional buffer percent.
Output:
Recommended pizza count, total slices required, and how many slices over/under the buffer you'd be.
Who's eating?
Fine-tune

Estimate

Slices needed
36
Buffer slices
4
Pizzas to order
5
Extra slices after rounding
4

Estimate only. Adjust for sides (wings, salads, drinks), dietary needs, leftovers preference, and how generous you want the host to look.

Results are estimates. Slice counts vary by brand and franchise. Call ahead if cut shape matters for your group. We never claim a code or discount is guaranteed — verify totals at checkout before you order.

Defaults explained

  • Adults: 2 slices (light), 3 (normal), or 4 (hungry).
  • Kids: 1 slice (light) or 2 (normal / hungry).
  • Pizza size: 4 small / 8 medium / 8 large / 12 extra-large. Override if your local chain cuts differently.
  • Buffer: a 10% buffer is enough for most parties. Bump to 20% if guests are running late or you want guaranteed leftovers.

Pair with

Related tools

  • Pizza Party Planner → Plan a pizza party: how many pizzas to order, a rough budget fit, and a checklist of dietary notes to confirm with the restaurant.
  • Delivery Bill Splitter → Split a pizza delivery bill — subtotal, tax, delivery fee, service fee, tip, and per-person extras — equally or by weight.

Related guides

  • Group pizza ordering guide → How to plan pizza for a crowd: slices per adult / kid, size mix for groups of 5–50, and a dietary checklist to confirm with the restaurant before ordering.
  • Pizza delivery fees explained → What the line items on a chain pizza delivery checkout actually mean: delivery fee vs service fee, taxes on the discounted subtotal, driver tip, and how 'free delivery' codes interact with the rest.

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