How the Pizza Value Calculator Works
Have you ever wondered whether to get two small pizzas or one large? This calculator settles the debate once and for all by calculating the cost per square centimeter of pizza.
The Math of Pizza
The area of a circular pizza is calculated with the formula A = pi x (d/2) squared, where d is the diameter. The key point is that area grows with the square of the radius, not linearly. This means small increases in diameter produce large increases in surface area.
Practical example: a 12-inch pizza has an area of about 113 square inches. An 18-inch pizza has an area of about 254 square inches. The 18-inch pizza has only 50% more diameter, but offers 125% more pizza!
Why the Larger Pizza (Almost) Always Wins
At most pizzerias, the price does not scale proportionally with area. A large 18-inch pizza typically costs 1.5-2 times the price of a regular one, but offers more than double the surface area. This makes the larger pizza almost always more cost-effective per square inch.
Beyond Pizza
This geometric principle applies to any product sold in different sizes: cakes, pies, sheet pans. Comparing the price per square inch or per gram is always the best way to evaluate the real value.