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Find your roof area, the roofing squares to order and a typical price range for asphalt shingle replacement in about a minute. Pick your options below. No sign-up needed.
✓ Roof area and roofing squares
✓ Shingle bundles, with 10% for waste
✓ Price range for asphalt shingle replacement
No sign-up, no email
Four quick choices
Results update as you pick
and insured, HIC #2120969-DCWP
Free tool
Choose an option in each step. The numbers on the right change as you click.
How it works
Four steps turn a few choices into numbers you can plan with.
Your home footprint is the ground area under the roof. It is easier to know than the roof itself.
Steeper roofs have more surface. We multiply by a factor of 1.05 for low pitch up to 1.40 for very steep.
Eaves and rakes extend past the walls. We add about 7% for the overhang.
We divide the area by 100 to get squares, then add 10% for cuts, starters and waste.
Pitch guide
Pitch is written as rise over 12. Match your roof to one of these.
Almost flat to gentle. Common on porches, additions and some rowhouses. Easy to walk on.
The most common slope on single-family homes. Walkable with care.
Clearly steep. Crews use added safety gear, which can raise labor cost.
A 45 degree slope or more. Needs staging and extra safety planning.
Reading your results
Use them to compare estimates and plan an order.
The surface of the roof in square feet, including slope and overhang.
100 sq ft each. Contractors price and order roofing by the square.
Adds 10% for cuts, hips, valleys and starter courses.
Three bundles per square for asphalt shingles, rounded up.
A typical range for a full asphalt shingle replacement, including tear-off and cleanup.
A free inspection turns this range into a written, itemized price.
FAQ
It starts with your home footprint, multiplies by a pitch factor for slope and adds a margin for the roof overhang to estimate roof area. It converts that to roofing squares, adds 10% for waste and, for asphalt shingles, counts bundles and a typical price range.
A roofing square is 100 square feet of roof. Contractors measure and price roofs in squares. A 1,700 sq ft roof is 17 squares.
Most asphalt shingles come three bundles to a square. The calculator rounds up after adding 10% for waste, cuts and starter courses.
It gives a planning estimate. Complex rooflines, dormers, valleys and skylights add area. A free inspection measures your actual roof and gives a written price.
A full asphalt shingle replacement runs about $5,000 to $15,000 or more, and small roofs start near $5,000. See the roofing costs guide for what moves the price.
A steeper roof has more surface than the ground below it. A 12/12 roof has about 40% more surface than a flat one covering the same footprint.
Pitch is rise over 12 inches of run. Hold a level flat against the roof edge and measure the vertical rise at the 12 inch mark, or ask us to measure during your inspection.
Those systems change a lot with the profile, structure and details, so we price them after an inspection. The area and squares still help you plan.
The 2 layers option adds an allowance for extra tear-off. Rotted decking, flashing and permits are quoted on their own lines in your written estimate.
Call (347) 323-9128 or send your choices with the form on this page. We inspect for free and give you a written, itemized estimate.
Next steps
The calculator gives you a range. A free inspection gives you a written, itemized price with photos. Leaking right now? We are open 24/7.
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