Calculate roof area, roofing squares, roof pitch, roof shingles, and estimated roofing costs quickly and easily.
Enter the roof rise and run to calculate the roof pitch, roof angle, and slope multiplier.
Estimate how many roofing shingle bundles are needed based on your roof area and the coverage of each bundle.
Calculate roof area, roofing squares, material waste, and estimated cost.
Calculate roof pitch, roof angle, and slope multiplier from rise and run.
Estimate the number of roofing shingle bundles needed for your project.
To calculate roof area, start with the building's length and width. Multiply the length by the width to find the basic roof footprint.
Because a roof is sloped, the roof pitch must also be considered. A roof pitch multiplier can be used to convert the horizontal footprint into the actual sloped roof area.
Our roofing calculator automatically accounts for roof pitch and can also add a waste percentage for estimating roofing material requirements.
One roofing square equals 100 square feet of roof area. Roofing contractors commonly use roofing squares when estimating shingles and other roofing materials.
Roof pitch describes how steep a roof is. A common way to express roof pitch is rise over a 12-inch run.
For example, a 6/12 roof pitch means the roof rises 6 inches for every 12 inches of horizontal run.
The number of shingle bundles required depends on the total roof area, the amount of waste, and the coverage provided by the specific shingle product.
Enter the roof area and the coverage per bundle into the shingle calculator above to estimate the number of bundles.
Roofing projects usually require extra material because of cutting, overlapping, damaged materials, and installation waste. A waste percentage can therefore be added to the calculated roof area.
One roofing square is equal to 100 square feet.
The number of bundles can vary depending on the shingle product and its coverage. Check the manufacturer's packaging for the exact coverage.
Many estimates use around 10% waste, although the actual amount depends on the roof design, materials, and installation method.
A 6/12 roof pitch means the roof rises 6 inches for every 12 inches of horizontal run.
Yes. The calculators are designed to work on desktop, tablet, and mobile devices.