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Pizza Size Calculator
Compare pizza sizes and surface areas accurately
Geometric Rule: Pizza surface area is calculated using the circle area formula $\text{Area} = \pi \times r^2$, where radius $r = \frac{\text{Diameter}}{2}$. For example, a 14-inch pizza has ~36% more surface area than a 12-inch pizza. Enter your diameters below.
Pizza Diameter Parameters Input
Calculation Results
⚠️ Pizza area scales quadratically with diameter, meaning small increases in inches yield major differences in total food volume!