Result
Pizza B has the lower price per square inch
Pizza B costs about 15.63% less per square inch under the entered diameters and prices. Compare crust, toppings, thickness, and usable portions separately.
- Pizza A area
- 113.1 sq in
- Pizza A price per square inch
- $0.11
- Pizza B area
- 201.06 sq in
- Pizza B price per square inch
- $0.09
- Pizza A area per slice
- 14.14 sq in
- Pizza B area per slice
- 20.11 sq in
Planning estimate only. The result uses the prices, schedules, quantities, costs, rates, and targets entered. Confirm current quotes, contracts, policies, eligibility, legal obligations, and nonfinancial tradeoffs that apply to the decision. Read the full disclaimer.
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About this calculator
A larger diameter adds area in two dimensions. Compare the pizza you receive for each dollar rather than comparing diameter or slice count alone.
At a glance
- Cost
- Free
- Login
- Not required
- Best use
- Compare two round pizzas by circular area, price per square inch, slice area, and the percentage unit-price difference.
- Output
- Browser result with print and PDF options
- Reviewed
- 2026-08-09
Result summary
Quick answer
With the sample inputs, this calculator returns Pizza B has the lower price per square inch. Pizza A area: 113.1 sq in. Use Pizza B has the lower price per square inch as the result of the entered planning scenario. Use actual diameters and comparable final prices. Area does not account for crust width, thickness, toppings, quality, delivery fees, discounts, or uneaten portions, so use the result as one value comparison rather than a quality judgment.
Publisher Published by EverydayCalc Editorial Editorial standards and limitations
Each calculator shows its formula and defines the inputs. Worked examples make the math checkable. The page also names the limits that can change the result.
Last calculation review:
Instructions
How to use this calculator
Open the short walkthrough for choosing and checking inputs.
Each pizza's area is pi times the radius squared. Dividing price by that circular area gives price per square inch; dividing area by entered slices shows the average area represented by one slice.
Page guide
On this page
Jump directly to the part of the calculator you need.
Calculation details
Formula and methodology
See the exact math used to produce the result.
Each pizza's area is pi times the radius squared. Dividing price by that circular area gives price per square inch; dividing area by entered slices shows the average area represented by one slice.
Before acting
Assumptions to check
Review the real-world details that can change the estimate.
The key inputs are Pizza A diameter, Pizza A price, Pizza A slices, Pizza B diameter, Pizza B price. Use actual diameters and comparable final prices. Area does not account for crust width, thickness, toppings, quality, delivery fees, discounts, or uneaten portions, so use the result as one value comparison rather than a quality judgment.
More guidance Examples, methodology, and planning checks Open the worked example, review notes, reference tables, and practical next checks.
How to use the result
Use actual diameters and comparable final prices. Area does not account for crust width, thickness, toppings, quality, delivery fees, discounts, or uneaten portions, so use the result as one value comparison rather than a quality judgment.
When to use this calculator
- Answering the specific pizza size and value question with your own inputs
- Testing how one entered assumption changes the result
- Preparing a documented planning scenario before checking current quotes, contracts, rules, or nonfinancial tradeoffs
Tips for better estimates
- Replace every sample value with a current amount that uses the same unit and time period as the field label.
- Change one assumption at a time so the effect on the result remains clear.
- Confirm contracts, quotes, policies, eligibility, safety limits, and nonfinancial tradeoffs outside the arithmetic.
How this calculator is reviewed
This page is checked for inputs, formulas, examples, assumptions, topic fit, and related links. For this calculator, the review also covers the entered values and units, calculation method, final rounding, status boundary, omitted costs or benefits, current quotes or contracts, eligibility or legal limits, and nonfinancial tradeoffs.
The sample result is covered by automated tests, and the page links to related calculators and, where available, supporting guides so readers can check the assumptions before acting. If a formula, label, or assumption looks off, send the page URL and your inputs through the contact page.
Worked example
Example inputs: Pizza A diameter: 12 inches; Pizza A price: $12; Pizza A slices: 8; Pizza B diameter: 16 inches; Pizza B price: $18; Pizza B slices: 10. With those values, the calculator returns Pizza B has the lower price per square inch. Pizza B costs about 15.63% less per square inch under the entered diameters and prices. Compare crust, toppings, thickness, and usable portions separately.
Example scenarios
- Use Pizza B has the lower price per square inch as the sample result under the displayed inputs, not as a universal benchmark.
- Replace the sample values with one internally consistent scenario, then change one input at a time to see what drives the result.
- Apply the stated boundary carefully: Use actual diameters and comparable final prices. Area does not account for crust width, thickness, toppings, quality, delivery fees, discounts, or uneaten portions, so use the result as one value comparison rather than a quality judgment.
Quick reference chart
| Sample result | Pizza B has the lower price per square inch |
|---|---|
| Pizza A area | 113.1 sq in |
| Pizza A price per square inch | $0.11 |
| Pizza B area | 201.06 sq in |
| Pizza B price per square inch | $0.09 |
| Best next step | Use actual diameters and comparable final prices. Area does not account for crust width, thickness, toppings, quality, delivery fees, discounts, or uneaten portions, so use the result as one value comparison rather than a quality judgment. |
FAQs
Pizza Size and Value Calculator questions
Why does diameter understate the size difference?
Pizza area grows with the square of the radius. A 16-inch pizza therefore has substantially more area than a 12-inch pizza, not merely one-third more.
Do more slices mean more pizza?
No. Cutting the same pizza into more slices changes the average slice size but not its total area.
Does this compare toppings or crust?
No. The geometric comparison assumes the entered circles are comparable. Thickness, crust, toppings, and usable area remain separate.
Which price should I enter?
Use the final comparable pizza price. Add delivery, service, or other order-level fees separately when they differ between options.
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Common planning mistakes
Mixing units or time periods, leaving sample values unchanged, omitting required fees or costs, rounding before the final result, and treating an entered planning scenario as a quote, approval, legal determination, or guarantee.
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