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Roof Shingle Calculator
Roof Shingle Calculator
Roof Geometry & Area
Length & Width
Footprint Area ⓘ If non-zero, overrides L×W
Roof Pitch
Slope Factor
Roof Area
Roof Area (squares) ⓘ 1 square = 100 ft²
Shingle Material Requirements
Coverage per Bundle
Bundles Needed
Shingles per Bundle
Total Shingles
Key Features
✔ User-friendly interface with clear inputs for roof dimensions, pitch, and shingle coverage details.
✔ Advanced pitch calculation accepting roof pitch as ratio (e.g., 4:12), percentage, or degrees to determine the true surface area.
✔ Flexible unit conversions for dimensions (ft, m, in) and areas (ft², m²) throughout the calculation process.
✔ Footprint override option allowing direct input of total footprint area, bypassing individual length/width entries.
✔ Comprehensive results including slope factor, total roof area (in chosen units and industry "squares"), bundles needed (rounded up), and total shingles.
✔ Dynamic input symbols that update automatically based on selected units for enhanced clarity.
✔ Instant result sharing via a convenient clipboard copy feature for key roofing material estimates.
How to Use It
- Enter Roof Dimensions: Input the length and width of your roof's footprint, selecting your preferred units (feet, meters, or inches). Alternatively, if you know the total footprint area, you can enter it directly in the 'Footprint Area' field, and it will be used instead of length × width.
- Specify Roof Pitch: Enter your roof's pitch value. Then, select how you're defining the pitch: as a 'Ratio' (e.g., enter '4' for a 4:12 pitch), 'Percent' slope, or in 'Degrees'. The calculated slope factor will be displayed.
- Define Shingle Details: Input the 'Coverage per Bundle' (e.g., 33 ft²) provided by your shingle manufacturer, selecting the correct unit (ft² or m²). Also, enter the number of 'Shingles per Bundle'.
- Review Calculated Needs: The calculator will instantly display the total roof surface area (in your chosen units and also in "squares" – where 1 square = 100 ft²), the total number of shingle bundles required (automatically rounded up to the nearest whole bundle), and the total count of individual shingles needed for your project.
- Share or Reset: Use the 'Share Result' button to copy the main figures (roof area, bundles, total shingles) to your clipboard. You can use 'Clear All Fields' to reset inputs to their defaults or 'Reload Calculator' to start completely fresh.
Plan Your Roofing Project with Confidence
Our Roof Shingle Calculator simplifies one of the most crucial parts of planning your roofing project. Accurately estimate the required materials by precisely factoring in your roof's dimensions and its specific pitch. This tool helps you determine the exact roof surface area, the correct number of shingle bundles to purchase (accounting for necessary rounding), and the total shingles required. Avoid costly over-ordering or frustrating material shortages with our precise, comprehensive, and easy-to-use calculations.
Minimize waste, save money, and approach your roofing project with complete assurance! Use our Roof Shingle Calculator to get accurate material estimates today.
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