Pizza Size Calculator
Compare pizzas by area rather than diameter, find the real price per square inch, and size an order for a group.
The Pizza Size Calculator runs entirely in your browser. Prices and sizes you enter stay on your device.
Open the Unit Price Calculator
Об инструменте Pizza Size Calculator
Pizza is priced by diameter and eaten by area, and area grows with the square of the radius. That single fact settles most arguments at the counter: an 18-inch pizza is 254 square inches while two 12-inch pizzas come to 226, so the single large one is more food and usually costs less. Enter the sizes and prices you are choosing between and this calculator works out the area of each, the total across however many you are ordering, and the price per square inch that tells you which deal is genuinely better. It also sizes an order for a group by slices, using the slice counts pizzerias actually cut at each diameter.
Возможности
- Area of every option, in square inches or square centimetres
- Price per square inch, the only fair way to compare deals
- Best value and most food flagged separately
- Percentage saving between the best and worst option
- Equivalence: how many small pizzas make one large
- Slice counts by diameter and pizzas needed for a group
- Inches or centimetres, converted as you switch
- Everything computes in your browser
Как использовать Pizza Size Calculator
- Enter the diameter, price and quantity of the first option
- Add the option you are comparing it with
- Read the area and the price per square inch for each
- Use the group section to size the whole order
Пример
Ввод
Two 12-inch at $12 each vs one 18-inch at $18
Результат
226 sq in for $24 vs 254 sq in for $18
The 18-inch is 33% cheaper per square inch and gives more pizza
One 18-inch equals 2.25 twelve-inch pizzas, not two.
Частые ошибки и устранение неполадок
- Two mediums seemed like more pizza than one large. — Only if the diameters are close. Area scales with the square of the radius, so an 18-inch has 2.25 times the area of a 12-inch — one large beats two mediums whenever the large is more than about 1.41 times the diameter.
- The calculated area feels generous compared with what arrived. — The maths measures edge to edge. A thick crust with a wide rim can lose two inches of topping diameter, which is 30% of the usable area on a small pizza.
- A rectangular pizza cannot be compared here. — Multiply length by width for a Detroit or Sicilian tray and compare that number against the round areas shown — a 14 by 10 inch tray is 140 square inches, between a 12 and a 14 inch round.
Часто задаваемые вопросы
- Is one large pizza more than two medium pizzas?
- Usually yes. One 18-inch pizza is 254 square inches against 226 for two 12-inch pizzas, and it is normally cheaper too. The rule of thumb is that a single pizza wins whenever its diameter is more than 1.41 times the smaller one.
- How much bigger is a 16-inch pizza than a 14-inch?
- About 31% bigger. Area goes as the square of the diameter, so 16² ÷ 14² is 1.31 — two inches of diameter buys far more pizza than it sounds like.
- How many pizzas do I need for 10 people?
- At three slices each and eight slices per 14-inch pizza, four pizzas. Adjust up for teenagers or a long event, and down if there are sides and desserts.
- How many slices are in each pizza size?
- Typically six for a 10-inch, eight for a 12 or 14-inch, ten for a 16-inch and twelve for an 18-inch. Slice count is a cutting convention, so it changes what a slice weighs rather than how much pizza there is.
- What is a fair price per square inch for pizza?
- It varies enormously by market and quality, so the useful comparison is between the options in front of you rather than an absolute figure. Within one menu, the largest size is almost always the lowest price per square inch.
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