Compare two pizzas of different sizes and prices to see which one is actually the better deal, by price per square inch.
How it works
Since a pizza’s surface is a circle, its area is π × (diameter ÷ 2)² — area grows with the square of the diameter, not linearly, so a 14-inch pizza has nearly 36% more area than a 12-inch one, not just 17% more. Dividing each pizza’s price by its area gives a fair price-per-square-inch comparison.
What this does not include
This compares raw price per unit area only — it doesn’t account for topping density, crust thickness, or personal preference, all of which affect how much pizza you’re actually getting.
How to use this calculator
- Enter Pizza A’s price and diameter.
- Enter Pizza B’s price and diameter.
- See which pizza costs less per square inch.
Why isn’t a 14-inch pizza just a bit bigger than a 12-inch one?
Because area scales with the square of the diameter, a 14-inch pizza has about 36% more area than a 12-inch pizza — much more than the 17% difference in diameter alone would suggest.
Is the bigger pizza always the better deal?
Often, but not always — pricing varies by restaurant, so it’s worth checking; this calculator does the area math so you can compare fairly instead of guessing from diameter alone.
Does this work for comparing more than two pizzas?
This calculator compares two at a time, but you can run it again pairing different combinations to compare three or more options.
