# How much bigger is a 12-inch pizza vs 10-inch?

A 12-inch pizza is approximately **44% larger** than a single 14-inch pizza.

The size of a pizza is determined by its diameter, which is the distance across the center of the pizza. A 12-inch pizza is *2 inches larger in diameter* than a 10-inch pizza. However, the difference in size between the two pizzas is **not just 2 inches**, rather the area of **the 12-inch pizza is significantly larger than the area of the 10-inch pizza**.

## How to calculate the area of a circle

To calculate the area of a circle (and thus the area of a pizza), you use the formula A = Οr^2, where A is the area, Ο is pi (approximately 3.14), and r is the radius of the circle (which is half the diameter).

But you donβt have to do all these calculations with a pen and pencil β use our calculator.