Pizza Size and Value Calculator
Compares pizzas by what you pay per area, which is the fair way to compare different sizes.
Best value
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Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
One pizza B is this many pizza As —
Saving per area, best against worst — %
Comparison
The formula
area = π ÷ 4 × diameter² value = price ÷ area
Area grows with the square of the diameter, so a small step up in size is a large step up in pizza.
What to watch out for
The edge of a pizza is mostly crust, and it takes up a larger share of a small one, so a bigger pizza is slightly better value than the area suggests.
Frequently Asked Questions
How many 30 cm pizzas equal a 40 cm pizza?
1.78. The diameter is only a third larger, but the area is 78% larger.
Is one 18-inch pizza more than two 12-inch pizzas?
Yes. One 18-inch has 254 in² and two 12-inch have 226 in².