Pizza Value Calculator
Compare two pizzas by area, price per area, price per slice, and total savings to see which one is the better deal — enter each pizza's diameter, price, and slice count.
Input
Pizza A
Pizza B
Output
Comparison
| Metric | Value |
|---|---|
| No data yet | |
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Guides
Why bigger isn't always better
A pizza's area grows with the square of its diameter — a 16-inch pizza has almost 78% more area than a 12-inch one, not 33% more. That means the "small" and "large" size options at a pizzeria rarely scale their prices the same way, and the better deal isn't always the one that looks bigger on the menu.
How this tool works
- Enter each pizza's diameter, price, and slice count — the unit (inches or centimeters) applies to both.
- The Comparison table shows each pizza's area, price per unit of area, price per slice, and area per slice side by side.
- Better Value names the pizza with the lower price per unit area, Savings shows how much less it costs per unit area than the other, and Break-even Price shows what the losing pizza would need to cost to match the winner's value.
The math
- Area = π × (diameter ÷ 2)²
- Price per unit area = price ÷ area
- Price per slice = price ÷ slice count
- Savings = (1 − cheaper price-per-area ÷ pricier price-per-area) × 100
Common uses
- Deciding between a pizzeria's size options before ordering
- Comparing a deal/coupon price against the regular menu price
- Settling "is two mediums better than one large?" — run each pizza's price against the other's area and price to compare per-slice and per-area value directly
Privacy
This tool runs entirely in your browser. Your numbers are never uploaded to a server.
pizza comparisonprice per sliceprice per square inchbest value pizzapizza dealcost per areapizza math
Use it from code
From 3 credits per callREST API
curl -X POST https://api.iotools.cloud/v1/tool/pizza-value-calculator \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"unit": "in",
"diameterA": "12",
"priceA": "9.99",
"slicesA": "8",
"diameterB": "16",
"priceB": "14.99",
"slicesB": "8"
}'Swap in your own key from your account. The tool's fields are the body — no wrapper.
Ask an AI agent
Use the IOTools `pizza-value-calculator` tool (Pizza Value Calculator) on this input:
YOUR_INPUT_HEREPaste this at any agent connected to the IOTools MCP server, then add your input.