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Pizza Calculator

🍕Pizza Size Comparison

Pizza 1 diameter (in)"

Pizza 1 price (£)

Pizza 2 diameter (in)"

Pizza 2 price (£)

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Detailed Guide Coming Soon

We're working on a comprehensive educational guide for the Pizza Calculator in your language. The content below is shown in English.

What is Pizza Calculator?

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A pizza size calculator compares the area and value of different pizza sizes, revealing whether a large pizza is actually better value than two mediums. Area scales with the square of the radius, so a 16" pizza is not just 33% bigger than a 12" — it's 78% more pizza.

Calkulon makes complex calculations simple — built for students and everyday problem-solvers.

How to Pizza Calculator

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1Pizza area = π × (diameter/2)² = π × r²
2Value per square inch = Price / Area
3Compare cost per cm² or cost per square inch across sizes

Worked Examples

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Example 1

Given:12" pizza £10 vs 16" pizza £14

Výsledek:12": 113 in² at 8.8p/in² · 16": 201 in² at 7.0p/in²

16" is 20% cheaper per square inch

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Did you know?

A 18-inch pizza has 65% more area than a 14-inch pizza. This is the mathematical reason why ordering the biggest size is almost always better value at pizzerias.

References

›Pizza — Wikipedia

Formula-verified for precision

Reviewed October 2026

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