Roof replacement cost calculator
Enter an address and get a cost range for that actual roof — measured from satellite, priced on its real size and pitch. No square footage to look up first.
Free · No signup · Reads a 3D satellite model of the roof, not a database of guesses
Or enter the numbers yourself
Roof size, material, pitch, and how many old layers come off — the four things that set the price.
Roof details
Adjust these to match the job.
Roof surface area, not the home’s footprint.
That’s about 20.0 squares of roof. Not sure of the area?
How many old roof layers come off before installing.
Estimated replacement cost
$11,550 – $17,300
Midpoint around $14,425 · roughly $578–$865 per square installed.
What’s in this estimate
- Roof size
- 20.0 squares
- Material & install range
- Architectural / dimensional shingles
- Typical service life
- 25–30 years
- Pitch adjustment
- ×1.15
- Tear-off & disposal
- $1,200
This is a rough estimate, not a quote. Real pricing depends on your local labor and material costs, access, decking condition, code requirements, and accessories like flashing, vents, and underlayment. Always measure the roof and price the full scope before sending a bid.
How roof replacement cost is calculated
Roofers price in squares — 100 square feet of roof surface. Everything else is a multiplier on top of that number.
- 1
Measure the roof in squares
Everything downstream is priced per square — 100 square feet of roof surface. Enter the address at the top of this page to read the sloped area off a 3D satellite model, or measure the footprint and multiply by the pitch multiplier. Roof area, not house size: a 2,000 sq ft home with a 6/12 roof has about 22.4 squares of roof.
- 2
Multiply by the installed cost per square for the material
Installed cost bundles materials and labor together. Architectural asphalt shingles run roughly $450–$700 per square installed, 3-tab $350–$550, synthetic $700–$1,200, standing-seam metal $900–$1,600, and concrete or clay tile $1,000–$1,800. Local labor rates move these more than anything else on the list.
- 3
Adjust for pitch and complexity
Steep and cut-up roofs are slower and need more safety setup. A walkable 4/12 roof carries no adjustment; 5/12 to 8/12 adds roughly 15%; 9/12 and above adds roughly 35%. This is the same reason insurance estimates carry a separate steep-slope charge from 7/12 up.
- 4
Add tear-off and disposal for every existing layer
Removing and hauling away the old roof runs about $60 per square per layer. Two layers on a 25-square roof is roughly $3,000 before a single new shingle goes on. A roof going over an existing layer skips this, though most codes cap a roof at two layers total.
- 5
Leave room for what the tear-off finds
Rotten decking, missing or rusted flashing, inadequate ventilation and code upgrades are not visible from the ground and are not in any calculator. Decking replacement alone is commonly $70–$120 per sheet. Treat the range you get here as the number to sanity-check a quote against, not as the quote.
Roof cost by material
Installed cost per square (materials and labor), and what that works out to on a 2,000 sq ft home with a 6/12 roof — about 22.4 squares, before tear-off.
| Material | Per square | Service life | 22.4-square roof |
|---|---|---|---|
| 3-tab asphalt shingles | $350–$550 | 15–20 years | $9,016–$14,168 |
| Architectural / dimensional shingles | $450–$700 | 25–30 years | $11,592–$18,032 |
| Standing-seam metal | $900–$1,600 | 40–70 years | $23,184–$41,216 |
| Concrete or clay tile | $1,000–$1,800 | 50+ years | $25,760–$46,368 |
| Synthetic / composite | $700–$1,200 | 30–50 years | $18,032–$30,912 |
Metal looks like the expensive option on the sticker and the cheap one per year: standing-seam lasts 40–70 years against 25–30 for architectural shingles, so a roof you keep is priced very differently from a house you plan to sell.
Roof cost by house size
Architectural shingles on a 6/12 roof, including one layer of tear-off. Home size, then the roof it actually implies.
| Home footprint | Roof area | Squares | Estimated cost |
|---|---|---|---|
| 1,500 sq ft | 1,677 sq ft | 16.8 | $9,685–$14,506 |
| 2,000 sq ft | 2,236 sq ft | 22.4 | $12,913–$19,341 |
| 2,500 sq ft | 2,795 sq ft | 28.0 | $16,141–$24,177 |
| 3,000 sq ft | 3,354 sq ft | 33.5 | $19,369–$29,012 |
| 3,500 sq ft | 3,913 sq ft | 39.1 | $22,598–$33,847 |
Note the second column. Every one of these roofs is bigger than the house under it — which is why a cost calculator that asks for your home's square footage is answering a different question than the one you asked. Enter the address at the top to skip the assumption.
If a storm did it, this is the wrong number
A roof replaced because of hail or wind damage is an insurance claim, and what you pay is your deductible — not the range above. The claim gets written in the same squares this calculator uses, which is why the measurement matters more than the estimate does.
Before you pay out of pocket, check what actually hit that address and when. Storms going back three years, with radar-measured hail size.
Check this address for hail damageNext
Roof square footage calculator — the squares this price is built on.
Roof pitch calculator — the complexity factor, measured rather than guessed.
Free roofing estimate template — turn a range into a quote you can send.
HailMate estimating — branded estimates, signed from a phone.
Roof replacement cost questions, answered
For a typical 2,000 sq ft home, an architectural asphalt shingle replacement usually lands somewhere around $12,000–$19,000 installed, including tearing off one existing layer. Standing-seam metal on the same house runs roughly double. The three things that move it most are the roof size in squares, the material, and how steep and cut-up the roof is — enter the address above to price your actual roof rather than an average one.