Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Circular top-area comparison. Thickness, crust width, toppings, calories and taste are not compared.
Example Calculation
- Pizza A diameter: 30 cm
- Pizza A price: 12 currency
- Pizza B diameter: 40 cm
- Pizza B price: 18 currency
A 30 cm pizza for 12 costs about 1.698 per 100 cm²; 40 cm for 18 costs about 1.432.
Frequently asked questions
How do I use this calculator?
Enter pizza a diameter, pizza a price, pizza b diameter, pizza b price. The result updates automatically. Use Reset to restore the example values.
What method does it use?
top area=πd²/4; price per 100 cm²=price/area ×100.. Circular top-area comparison. Thickness, crust width, toppings, calories and taste are not compared.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.