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Pizza Size Calculator

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Pro Tip

Always verify your input values before calculating. For pizza size, small input errors can compound and significantly affect the final result.

Difficulty:Intermediate

Did you know?

A single 18-inch pizza has more area than two 12-inch pizzas combined. The 18" has 254 in² vs 226 in² for two 12" pizzas.

Mathematically verified
Reviewed May 2026
Used 19K+ times
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