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You need three dimensions to find the number of needed shingles for your roof: Measure the length of the roof at the base of the roof. Measure the width of the roof, again at the base of the roof. Determine the roof pitch, which is the steepness of a roof. Use the roof shingle calculator to complete the estimations.
The first step in estimating the cost of a new shingle roof is figuring out the size of your roof and how many shingles you need. With accurate roof measurements, you can use a roofing calculator or a few simple formulas to determine how many squares of shingles you’ll need.
However, the vast majority of shingles require only 3 bundles per 100 square feet. For most shingle types, you’ll need 3 bundles to make a square of finished roof, which is 100 square feet. If you have a roof area of 3000 square feet, you’ll need 90 bundles of shingles.
Updated December 23, 2022. Photo: Vipada / Adobe Stock. This roofing calculator will help you calculate shingles for your project and find the total number you’ll need to cover your roof, including an overage of about 10%. It also covers how many squares you’ll need and how many bundles of shingles you’ll want to buy for your project.
Our calculator will help you estimate the amount of roofing shingles needed for your project, plus the cost of materials and accessories. Simply enter your roof dimensions and roof type, such as gable or hip, and approximate roof pitch.
Calculate your roof’s size and estimate how many bundles of shingles, rolls of felt, and squares of roofing material you need for a new roof. Add the price per square for materials to get an estimated material cost.
Calculate the exact number of shingles required for your roof based on the roof’s square footage, slope, and the specific shingles you plan to use. This ensures you purchase the right amount and avoid excess or shortage.
Calculate. Result: How to Use the Shingle Calculator. To use this shingle calculator, enter the length and width of your roof in feet, as well as the pitch of your roof. Then click the “Calculate” button to see the result. The result will display the number of squares of shingles needed to cover your roof. How It Calculates the Results.
Result: Shingle Square Calculator. This calculator helps you determine the number of squares of shingles required for your roofing project. You need to input the length and width of the roof in feet, select the pitch of the roof, and specify a waste percentage to account for cutting and errors. How to Use: Enter the length of the roof in feet.
Divide your total roof area (in square feet) by 100. This tells you how many “squares” your roof has. For example, a 1,500 square foot roof equals 15 squares. Step 3: Determine Bundles per Square. Most standard three-tab shingle bundles cover about one-third of a square (roughly 33 square feet), meaning three bundles are typically needed ...