The cost per square inch is a common metric used to understand the cost efficiency of materials, packaging, or products. It's useful when you're comparing different sizes or shapes of items and want to know which gives you the best value.

## How to Use the Cost Per Square Inch Calculator

To determine the cost per square inch, enter the following:

- Total cost of the item in USD.
- The width of the item in inches.
- The height of the item in inches.
- If applicable, include any extra costs such as shipping or taxes.
- Click 'Calculate Cost Per Square Inch' to get the result.

### Formula Used

The calculator uses the following formula to calculate the cost per square inch:

**Cost Per Square Inch = (Total Cost + Additional Costs) / (Width * Height)**

This formula calculates the total area (in square inches) and divides the total cost by that area.

### Example Calculation

For example, if a product costs $200, has a width of 10 inches, and a height of 20 inches, with an additional $10 in taxes, the calculation would be:

**Cost Per Square Inch = ($200 + $10) / (10 * 20) = $210 / 200 = $1.05 per square inch**