Pizza Party Calculator
How many pizzas to order for X people? Estimate based on appetite (light/medium/large) and rodízio preference. Everything in your browser.
Pizza math: area is what you pay for
Pizza size is given by diameter, but you actually eat area. The formula is A = π · r² = π · d² / 4. Because area grows with the square of the diameter, small diameter differences hide large area gaps. A 35 cm large pizza has A ≈ 962 cm²; a 30 cm medium has 707 cm²; a 20 cm personal has 314 cm². The counter-intuitive result: two 30 cm mediums total 1,414 cm², beating one 35 cm large (962 cm²) by ~47%. The honest comparison metric is price per cm² (or per slice of identical area). For group orders, an adult typically eats 300–400 g of pizza, and a large pizza weighs ~1.2–1.4 kg → feeds 3–4 people.
Applications
Splitting the bill at a pizzeria, deciding "one large or two mediums?", comparing iFood / Rappi / Uber Eats deals where promo pricing hides the per-area cost, and planning office or family orders.
How many pizzas to order?
Every party or get-together hits the same doubt: how many pizzas to order so there's no shortage and no mountain of leftovers? The calculator settles it starting from the number of people and the average hunger of each one.
You set the group's appetite between light, medium or large and pick how you'll serve. From there the tool estimates how many pizzas, or guides the consumption if it's all-you-can-eat. Guesswork at order time is gone, and so is that awkward moment of food running short or leftovers stranding in the fridge.
The calculation runs in the browser. Handy for anyone hosting people at home who wants to nail the order on the first try.
Frequently asked questions
Are 2 mediums always better than 1 large?
How many slices per pizza?
What about square or rectangular pizzas?
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The results provided by this tool are for general informational and educational purposes only and do not constitute professional, financial, medical, legal, tax or accounting advice. Always confirm important decisions with a qualified professional and official sources.