# Pizza Size Comparison Calculator

URL: https://speedycalculator.com/calculators/food/pizza-size/
Last updated: 2026-10-25

> The pizza size calculator compares two pizzas by area and price per square inch, showing which is the better deal. A 16-inch pizza has nearly twice the area of a 12-inch one.

## Inputs

- Pizza A diameter (in)
- Pizza A price
- Pizza B diameter (in)
- Pizza B price

## Results

- Area of A
- Area of B
- A price per in²
- B price per in²
- B gives more pizza per money by

## Formula

```
Area = π × (diameter ÷ 2)²
Value = price ÷ area
```

## Explanation

Because area grows with the square of the diameter, bigger pizzas usually give much more food per dollar.

### How to use the Pizza Size Comparison Calculator

- **Pizza A diameter**
- **Pizza A price**
- **Pizza B diameter**
- **Pizza B price**

Results update as you type, and every field accepts the units shown in its menu.

### How it works

Compute each pizza’s area from its diameter and divide the price by it.

### Inputs explained

FieldWhat to enterPizza A diameterIn inPizza A priceAmount in your currencyPizza B diameterIn inPizza B priceAmount in your currency

### What each result means

- **Area of A** = pi×([Pizza A diameter]÷2)^2
- **Area of B** = pi×([Pizza B diameter]÷2)^2
- **A price per in²** = [Pizza A price]÷[Area of A]
- **B price per in²** = [Pizza B price]÷[Area of B]
- **B gives more pizza per money by** = ([A price per in²]÷[B price per in²] - 1)×100

### Example values

How the main result changes when **Pizza A diameter** changes and everything else stays at the example values above:

Pizza A diameter (in)B gives more pizza per money by (%)6374.19110.71218.515-24.118-47.324-70.4

## Worked example

Inputs — Pizza A diameter: 12 in; Pizza A price: $12; Pizza B diameter: 16 in; Pizza B price: $18.

Results — Area of A = 113.1 in²; Area of B = 201.1 in²; A price per in² = $0.1061; B price per in² = $0.0895; **B gives more pizza per money by = 18.5 %**.

## FAQ

**Are two medium pizzas better than one large?**
Usually not; compare by area.

**Does crust count?**
This counts the whole pizza; thick crust edges reduce the topped area.

**What formula does the Pizza Size Comparison Calculator use?**
Area = π × (diameter ÷ 2)².