Roofing Estimate Calculator

Estimate the cost to install a new roof in a click of a button! Just plug in your house dimensions, select your roof pitch, relative roof difficulty, choice of materials, and let our Calculator do the rest.

Roof length: ft.
Roof width: ft.
Roof slope:
Roof difficulty:
Number of levels:
Ridge-vent: ft.
Roofing materials:

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To get a 100% free roof quote, enter your zip code above and fill out a simple estimate request form on the next page.

Supported Roof Types:

Our calculator will estimate your total roofing cost installed, including the cost of materials, labor, and warranty for any major type of roof including 3-tab asphalt shingles, architectural and premium composition shingles, PVC, TPO, EPDM rubber, built-up roofs, cedar shakes and shingles, clay tiles, natural slate, and metal roofing.

All prices are based on national average roof replacement costs in the US, in conjunction with regional pricing data from roofing contractors we’ve surveyed.

To make your pricing details more precise, you can choose the number of floors or levels in your house, along with the number of skylights and chimneys that will need to be properly re-flashed and shingled around. You can also indicate whether or not you want to include the cost of the tear-off and disposal of the old roof in your estimate.

Estimating Materials and Area of the Roof:

If you need to estimate the cost of materials and the number of bundles of shingles required for the job, you can do so here.

New Shingle Roof

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New Metal Roof

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New Flat Roof

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8 thoughts on “Roofing Estimate Calculator”

  1. I have a manufactured home 30×50 with a 2/12 slope gable roof. We got a quote for $13,000 for a 3-tab shingle replacement roof in Broward County, FL.

    This seems way too high. Thoughts?

    • Hi Ken,

      So, there are a few problems with this quote:

      1. You should not install an asphalt shingle roof on a roof that has a slope shallower than 3/12 or 4/12, depending on the product specs. You will instantly void the manufacturer’s product warranty for not meeting the installation specs. A shingle roof on such a shallow slope will NOT meet the building code requirements for Broward county, FL.
      2. In Florida, you should not install 3-tab shingles, even if that is what you currently have on the roof. 3-tab shingles are only rated to withstand wind uplift speeds of 60 MPH to 70 MPH max. You roof will lose these 3-tab shingles due to wind uplift and blow-off in a major storm or hurricane.

        — Normally, if your roof had a sufficient slope like 4/12 – 8/12, you would only install architectural shingles rated for 130 MPH wind uplift, such as GAF Timberline HDZ or Owens Corning Duration shingles (requires enhance installation method to achieve a 130 MPH wind uplift product warranty)

      3. Price-wise, assuming a complete replacement (including the removal of old shingles up to two layers), you were quoted $13,000 to replace what is roughly a 1,700 square feet or 17 squares roof, assuming overhangs on each side of the roof and considering slight slope.

        — Now, Broward county is an expensive area in Florida, so generally speaking, it’s not too surprising to see the quoted new roof costs that are higher than the national average. However, for a simple gable roof on a single story house, the price should NOT exceed $10,000 for a complete replacement job, including site plans and building permits, tear-off and disposal of old shingles, and a comprehensive warranty on the installation. A quote of $8,000 to $10,000 would be more appropriate for such a job in our view.

      4. Because your roof doesn’t have a sufficient slope, you should consider installing either a single ply membrane roof like PVC or TPO, or an appropriate standing seam metal roofing system in a profile that is designed for shallow roof slopes like 2/12.

      Whenever you are getting quotes for a new roof, you should always aim to get several estimates from roofing contractors in the area. Here are the top questions to ask a roofing pro.

  2. I have a question regarding the cost of a new Malarkey Legacy shingle roof for an 984 square foot home and a one car detached garage. I don’t know the square footage of the garage. We live in Kansas. The pitch of the roof is 7 1/2 to 9 1/2. The garage roof has regular pitch.

    We were quoted over $14,000 for this and it seems excessive. Could you give us your thoughts on the estimate for such a roofing project?

    Thank you.

    • Hi Steve,

      So, Malarkey Legacy shingles fall into the mid-premium asphalt shingles category for estimating purposes. The price of Malarkey Legacy roof will be higher compared to say a mid-range GAF Timberline shingles roof. The difference between the two, will likely be between $50 and $150 per square (100 sq.ft.), depending on the contractor and whether they are a factory certified installer.

      Now, based on the info provided, your home’s floor plan is roughly 1,000 sq.ft. Assuming a single story rectangular house with a hip roof that has two-foot overhangs on each side of the house, we have approximately 13 squares or 1,300 square feet of 2D roof surface area. Now, assuming an average pitch of 9:12, we multiply the 2D area of 1,300 by 1.25. This gives us a 3D roof area of 1,625 sq.ft. Assuming this is a hip roof, we multiply this by 1.1, which gives us roughly 18 squares or 1,800 square feet of the roof surface.

      For estimating purposes, we also assume that there is a chimney, a couple of dormers, and two layers of old shingles that need to be torn off and removed before a new roof can be installed.

      After we input the following parameters (36 by 36 feet roof to account for two foot overhangs on each side, premium shingles, tear off two layers, medium difficulty, and one chimney) into the calculator above, we get the average mid-range price of $13,948. See the snapshot below:

      Premium shingles 18 squares hip roof estimate

      Now, Kansas has relatively low cost of living compared to coastal areas, so we can assume that in Kansas, such a roof would cost closer to low-end, or about $12,000 fully installed. The one car detached garage shouldn’t add much more than $1,000 to such a project.

      Needless to say, there could be other project specific variables and quotes can vary greatly from contractor to contractor, which is why we always recommend getting a few quotes to help you zero-in on the best company and price for the job.

  3. My insurance is replacing my roof due to wind and hail damage. I currently have an asphalt roof. Would my insurance pay for the architectural shingles with venting?

    • Hi Melissa,

      We don’t see why they wouldn’t pay for a properly vented architectural shingles roof, as long as the cost of the new roof falls within their maximum allowed payout amount on this insurance claim.

      All else being equal, architectural shingles will last than a 3-tab shingles. Plus, proper venting will help extend the lifespan of a new roof.

      The way we see it, all of the above are in the insurance company’s best interest.

  4. Many of our asphalt shingles got blown off in the winter storm. Our current roof is 25 years old and needs replacing. We are considering putting on a metal roof because we live in the forest and believe it is more fire resistant than asphalt.


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