Pizza size comparison
Pizza size comparison: use first pizza diameter, number of first pizzas, comparison pizza diameter. Review the formula, worked example and calculation steps.
Inputs
Use the units shown—
Enter your values and select Calculate.
Formula & explanation
Equivalent comparison pizzas = count × first diameter²/comparison diameter²
Variables & units
- First pizza diameter
- same unit · minimum 0.000001, maximum 1000000000000
- Number of first pizzas
- Numeric value · minimum 1, maximum 1000
- Comparison pizza diameter
- same unit · minimum 0.000001, maximum 1000000000000
Worked example
Use the example inputs to explore this model; the solution shows each supplied quantity.
Assumptions
Compares circular surface areas, ignoring crust width, thickness and toppings.
Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.
Practice with an example
Use the default input values to find the answer. The reset icon restores those values.
Calculated on your device. Your latest 100 calculations stay in this browser.