Pizza Size Comparison Calculator
Compare pizza sizes by area and price to find the best value.
About the Pizza Size Comparison Calculator
Enter the diameter, price and quantity of two pizza options, in inches or centimetres. The calculator compares the total area and the price per 100 square units and names the better deal.
Area grows with the square of the diameter, so one 16-inch pizza (201 in²) has more than two 10-inch pizzas (157 in²).
The formula
Area = π × diameter² ÷ 4; value = price ÷ area
Worked example
A 12-inch pizza for 14 or a 16-inch pizza for 20
- 12-inch: π × 144 ÷ 4 = 113 in², 12.38 per 100 in²
- 16-inch: π × 256 ÷ 4 = 201 in², 9.95 per 100 in²
- The 16-inch has 78% more pizza for 43% more money
Questions people ask
Is a large always better value?
Usually, but not always; check the numbers.
What about crust?
Larger pizzas have proportionally less crust edge.
Two mediums or one large?
Enter 2 as the quantity for the medium and compare; the large often wins on area.