Pizza size value calculator
Compare two pizza sizes by price per square inch to see which one is actually the better deal — bigger isn't always cheaper per bite.
Fill in the fields and press Calculate to see your result here.
How this calculation works
Pizza area grows with the square of the diameter, not in a straight line — a 16-inch pizza has roughly 78% more area than a 12-inch one, not just 33% more. Dividing each price by its area gives a fair price-per-square-inch comparison, which is usually a better way to spot the real deal than comparing sticker prices alone.
Tips
A bigger pizza is almost always the better per-inch deal
Because area scales with the square of the diameter, going up even a couple of inches adds a lot more pizza than the price usually reflects — it's a classic case of doing the math paying off.
Diameter versus area
Doubling the diameter quadruples the area. A 16-inch pizza has about 78% more pizza than a 12-inch.
Value isn't only area
Crust thickness and toppings change what you get, so treat price per area as one input.
Compare per slice too
If slices differ in size, the per-area figure keeps the comparison fair.
Frequently asked questions
Does this account for topping density or crust thickness?
No, it's a pure geometric area comparison based on diameter and price. A deep-dish or heavily topped pizza delivers more food per square inch than the area alone suggests.
What if my pizza is square, not round?
This calculator assumes a round pizza. For a square or rectangular pizza, multiply length × width for the area instead and divide the price by that.