This tool helps you calculate the number of shingle bundles you need for your roofing project.

## How to Use the Shingle Bundle Calculator

To use this calculator, follow these steps:

- Enter the length of your roof in feet.
- Enter the width of your roof in feet.
- Enter the pitch of your roof as a rise over run value in decimal format (e.g., 0.5 for a 6/12 pitch).
- Enter the coverage area of one shingle bundle in square feet as specified by the manufacturer.
- Click the ‘Calculate’ button to see the result.

## Explanation of Calculation

The calculation works by determining the total surface area of your roof based on its length, width, and pitch. The pitch affects the surface area as follows:

Total Surface Area = Length x Width x sqrt(1 + pitch^2)

Then, the number of shingle bundles needed is calculated by dividing the total surface area by the coverage area of one shingle bundle.

## Limitations

Please note the following limitations of this calculator:

- This calculator does not account for waste or additional materials needed for valleys, ridges, and hips.
- Always consult with a roofing contractor to get exact estimates and consider other factors that may affect material requirements.