💲 Roof Cost per Square Foot Calculator
Installed price per sq ft for 14 roofing materials, by roof size, pitch and state (2026)
Enter your house footprint and pitch (or the roof area), pick a material and your state, and get the installed price per square foot, per square and for the whole roof, with or without tearing off the old one.
Smart Home Calculators — Roof Cost per Square Foot Calculator — smartroofingcalculator.com/roof-cost-per-square-foot/ — printed
Ground-floor outline to the drip edge. Use the roof area box below instead if you know it
Not sure? The roof pitch calculator finds it from a level and tape or the ridge height
From a roofer's measurement report — overrides the footprint and pitch
Scales the price to your state's roofer wages and material prices
🛠️ How This Calculator Works
Roofers price the sloped roof surface, so the calculator first turns the footprint into roof area: footprint × √(1 + (rise ÷ 12)²), the pitch multiplier (flat roofs use the footprint). It then multiplies that area by the material's installed band per sq ft (materials and labour), adds $1.00–$1.75 per sq ft to remove one asphalt layer ($1.00–$1.30 on a flat roof), and scales everything by your state's price level — the state's architectural-shingle band against the national $450–$650 per square.
📐 Formula
Roof area = footprint × √(1 + (rise ÷ 12)²) | Cost = roof area × (installed $/sq ft + tear-off $/sq ft) × state factor | Squares = roof area ÷ 100📝 Example Calculation
A 2,000 sq ft footprint at 6/12 with architectural shingles, old roof off, national prices: • Roof area = 2,000 × 1.118 = 2,236 sq ft (22.4 squares) • Shingles installed: 2,236 × $4.50–$6.50 = $10,062 – $14,534 • Tear-off: 2,236 × $1.00–$1.75 = $2,236 – $3,913 • Total ≈ $12,298 – $18,448, or $5.50 – $8.25 per sq ft
💡 Pro Tips from Roofers
- Measure the footprint to the drip edge, not the walls: a 1 ft overhang adds about 10% to a 2,000 sq ft house.
- Two-storey house? The roof covers the footprint, not the floor area — a 2,000 sq ft two-storey home has about a 1,000 sq ft footprint.
- Ask every roofer to price the same scope in writing: layers removed, underlayment, ice barrier, drip edge, vents and decking allowance.
- Find the pitch first with the roof pitch calculator, then the exact area with the roof square footage calculator.
- Insurance claim? The roof depreciation calculator shows what an ACV policy pays against this replacement cost.
❓ Frequently Asked Questions
How much does a new roof cost per square foot?
Installed, a new asphalt shingle roof costs about $3.90–$4.80 per sq ft for 3-tab and $4.50–$6.50 for architectural shingles. Metal runs $4.50–$7.50 for corrugated panels and $10–$16 for standing seam, tile $7–$22 and natural slate $20–$30. Tearing off one old layer adds $1.00–$1.75 per sq ft.
What is the average cost of a roof replacement?
About $11,000–$16,500 for a 2,000 sq ft roof (20 squares) of architectural shingles including tear-off of one layer, or $9,000–$13,000 without it. The Cost vs Value 2025 report puts a full-scope 30-square asphalt replacement at $31,871 nationally — about $10.62 per sq ft — because it includes new underlayment, flashing, ventilation and contractor overhead in high-cost markets.
How much does it cost to replace a roof per square foot with tear-off?
For architectural shingles, about $5.50–$8.25 per sq ft: $4.50–$6.50 for the new roof plus $1.00–$1.75 to remove one layer. Rotten decking is extra, at about $70–$120 per 4×8 sheet replaced.
Is roof cost per square foot measured on the house or the roof?
On the roof surface. Roofers price the sloped area, not the floor plan. Multiply the footprint (including overhangs) by the pitch multiplier — 1.118 at 6/12, 1.202 at 8/12 — so a 2,000 sq ft footprint at 6/12 is about 2,236 sq ft of roof, 22.4 squares.
How much is a roof for a 2,000 sq ft house?
A single-storey 2,000 sq ft house with a 6/12 roof has about 2,236 sq ft of roof. With architectural shingles at $4.50–$6.50 per sq ft that is $10,062–$14,534, or about $12,300–$18,400 with one tear-off layer. A two-storey 2,000 sq ft house has roughly half the footprint and half the roof.
What is the cheapest roof per square foot?
Ribbed 29-gauge steel panels ($4.00–$6.50) and 3-tab shingles ($3.90–$4.80) are the cheapest installed roofs. Per year of service, metal panels usually win: they last 30–45 years against 15–20 for 3-tab.
Why do roofing quotes vary so much per square foot?
Labour is about 45% of an asphalt job, so local wages move the price most — state levels on this page run from about 14% below to 16% above the national average. Steep pitches (over 8/12), two or more layers to remove, many valleys and dormers, and two-storey access all push a quote toward the top of the band.
How do I use the roof cost per square foot calculator?
Enter your house footprint including overhangs and the pitch (or the roof area if you already know it), pick a material, say whether the old roof comes off and choose your state. The calculator returns the roof area in squares, the installed price per sq ft and per square, the total range and the cost per year of service.
📱 Get the Smart Roofing App
Run every calculator offline, save results, and get a personalized project estimate — free, no signup.
📝 Related Articles
About the Smart Calculator Team
We build free, accurate construction calculators for homeowners and contractors. This article is part of our roofing knowledge base — we also publish guides and tools for other home improvement projects:
Shopping for someone? See our gift guide for roofers & DIY homeowners.
How much does a roof cost per square foot?
In 2026 a new asphalt shingle roof costs about $3.90–$4.80 per sq ft installed for 3-tab and $4.50–$6.50 per sq ft for architectural shingles. Metal runs $4.50–$7.50 for corrugated panels and $10–$16 for standing seam; tile is $7–$22 and natural slate $20–$30. Removing one old layer adds $1.00–$1.75 per sq ft. The average cost of a roof replacement — a 2,000 sq ft roof of architectural shingles with tear-off — is $11,000 – $16,500 ($5.50 – $8.25 per sq ft).
The Cost vs Value 2025 report puts a full-scope 30-square asphalt replacement at $31,871 nationally, about $10.62 per sq ft, and a metal one at $51,865. Those are contractor-survey prices that include new underlayment, flashing, ventilation and overhead in high-cost metros, so treat them as the top of the range.
Roof cost per square foot by material
| Material | Per sq ft installed | Per square |
|---|---|---|
| 3-tab shingles | $3.90 – $4.80 | $390 – $480 |
| Architectural shingles | $4.50 – $6.50 | $450 – $650 |
| Ribbed steel panels | $4.00 – $6.50 | $400 – $650 |
| Corrugated metal | $4.50 – $7.50 | $450 – $750 |
| Standing seam metal | $10.00 – $16.00 | $1,000 – $1,600 |
| Stone-coated steel | $7.00 – $13.00 | $700 – $1,300 |
| Synthetic slate | $4.00 – $8.00 | $400 – $800 |
| Cedar shakes | $5.50 – $11.50 | $550 – $1,150 |
| Concrete tile | $7.00 – $19.00 | $700 – $1,900 |
| Clay tile | $8.00 – $22.00 | $800 – $2,200 |
| Natural slate | $20.00 – $30.00 | $2,000 – $3,000 |
| EPDM rubber | $4.50 – $8.00 | $450 – $800 |
| TPO membrane | $5.00 – $9.00 | $500 – $900 |
| Modified bitumen | $3.50 – $6.50 | $350 – $650 |
Materials and labour, before tear-off. Each band comes from that material's own cost calculator on this site and its sources; follow the link for the detail.
Roof replacement cost by roof size
Square feet of roof, installed, national prices, without tear-off (add $1,000–$1,750 per 1,000 sq ft to remove one layer).
| Roof area | 3-tab shingles | Architectural shingles | Corrugated metal | Standing seam metal | Concrete tile | Natural slate |
|---|---|---|---|---|---|---|
| 1,000 sq ft | $3,900 – $4,800 | $4,500 – $6,500 | $4,500 – $7,500 | $10,000 – $16,000 | $7,000 – $19,000 | $20,000 – $30,000 |
| 1,500 sq ft | $5,850 – $7,200 | $6,750 – $9,750 | $6,750 – $11,250 | $15,000 – $24,000 | $10,500 – $28,500 | $30,000 – $45,000 |
| 2,000 sq ft | $7,800 – $9,600 | $9,000 – $13,000 | $9,000 – $15,000 | $20,000 – $32,000 | $14,000 – $38,000 | $40,000 – $60,000 |
| 2,500 sq ft | $9,750 – $12,000 | $11,250 – $16,250 | $11,250 – $18,750 | $25,000 – $40,000 | $17,500 – $47,500 | $50,000 – $75,000 |
| 3,000 sq ft | $11,700 – $14,400 | $13,500 – $19,500 | $13,500 – $22,500 | $30,000 – $48,000 | $21,000 – $57,000 | $60,000 – $90,000 |
House size to roof size (and shingle cost)
A roof is bigger than the house under it. Multiply the footprint by the pitch multiplier, then price the result. Architectural shingles, national band, without tear-off:
| Footprint | 4/12 roof (× 1.054) | 6/12 roof (× 1.118) | 8/12 roof (× 1.202) |
|---|---|---|---|
| 1,000 sq ft | 1,054 sq ft · $4,743 – $6,852 | 1,118 sq ft · $5,031 – $7,267 | 1,202 sq ft · $5,408 – $7,812 |
| 1,500 sq ft | 1,581 sq ft · $7,115 – $10,277 | 1,677 sq ft · $7,547 – $10,901 | 1,803 sq ft · $8,112 – $11,718 |
| 2,000 sq ft | 2,108 sq ft · $9,487 – $13,703 | 2,236 sq ft · $10,062 – $14,534 | 2,404 sq ft · $10,817 – $15,624 |
| 2,500 sq ft | 2,635 sq ft · $11,859 – $17,129 | 2,795 sq ft · $12,578 – $18,168 | 3,005 sq ft · $13,521 – $19,530 |
| 3,000 sq ft | 3,162 sq ft · $14,230 – $20,555 | 3,354 sq ft · $15,093 – $21,802 | 3,606 sq ft · $16,225 – $23,436 |
Every pitch has its own multiplier on the roof pitch chart; the per-house pages, such as shingles for a 2,000 sq ft house, count bundles too.
Roof cost per square foot by state
Architectural shingles and standing-seam metal, installed, per sq ft, cheapest state first. State levels come from BLS roofer wages and BEA goods prices (method on each state page). For a metro, see average cost of roof replacement by city.
| State | Shingles / sq ft | Metal / sq ft |
|---|---|---|
| Arkansas | $3.90 – $5.60 | $7.80 – $12.10 |
| New Mexico | $3.90 – $5.60 | $7.80 – $12.10 |
| West Virginia | $3.90 – $5.60 | $7.80 – $12.10 |
| Wyoming | $3.90 – $5.60 | $7.80 – $12.10 |
| Mississippi | $3.90 – $5.70 | $7.90 – $12.30 |
| Nebraska | $4.00 – $5.70 | $7.90 – $12.30 |
| Louisiana | $4.00 – $5.80 | $8.00 – $12.40 |
| Oklahoma | $4.00 – $5.80 | $8.00 – $12.40 |
| South Dakota | $4.00 – $5.80 | $8.00 – $12.50 |
| Tennessee | $4.00 – $5.80 | $8.00 – $12.50 |
| Alabama | $4.10 – $5.90 | $8.20 – $12.70 |
| Texas | $4.10 – $5.90 | $8.20 – $12.70 |
| Florida | $4.10 – $6.00 | $8.20 – $12.80 |
| Georgia | $4.10 – $6.00 | $8.20 – $12.80 |
| Iowa | $4.10 – $6.00 | $8.30 – $12.80 |
| Kentucky | $4.10 – $6.00 | $8.30 – $12.90 |
| Idaho | $4.20 – $6.00 | $8.40 – $13.00 |
| North Carolina | $4.20 – $6.00 | $8.30 – $13.00 |
| South Carolina | $4.20 – $6.00 | $8.30 – $13.00 |
| Arizona | $4.20 – $6.10 | $8.50 – $13.20 |
| Kansas | $4.20 – $6.10 | $8.50 – $13.20 |
| Delaware | $4.30 – $6.20 | $8.60 – $13.50 |
| Maine | $4.30 – $6.20 | $8.60 – $13.30 |
| Montana | $4.30 – $6.20 | $8.50 – $13.30 |
| New Hampshire | $4.30 – $6.20 | $8.70 – $13.50 |
| North Dakota | $4.30 – $6.20 | $8.60 – $13.40 |
| Utah | $4.30 – $6.20 | $8.50 – $13.30 |
| Virginia | $4.30 – $6.20 | $8.60 – $13.40 |
| Wisconsin | $4.30 – $6.20 | $8.60 – $13.30 |
| Vermont | $4.30 – $6.30 | $8.70 – $13.50 |
| Indiana | $4.40 – $6.30 | $8.70 – $13.60 |
| Nevada | $4.40 – $6.30 | $8.70 – $13.60 |
| Ohio | $4.40 – $6.40 | $8.80 – $13.70 |
| Pennsylvania | $4.40 – $6.40 | $8.80 – $13.70 |
| Colorado | $4.50 – $6.50 | $8.90 – $13.90 |
| Michigan | $4.50 – $6.50 | $8.90 – $13.90 |
| Missouri | $4.50 – $6.50 | $9.00 – $14.00 |
| Rhode Island | $4.50 – $6.60 | $9.10 – $14.10 |
| Maryland | $4.70 – $6.70 | $9.30 – $14.50 |
| Oregon | $4.70 – $6.80 | $9.40 – $14.60 |
| Hawaii | $4.90 – $7.00 | $9.70 – $15.10 |
| Connecticut | $4.90 – $7.10 | $9.80 – $15.30 |
| Alaska | $5.00 – $7.20 | $9.90 – $15.50 |
| Massachusetts | $5.00 – $7.20 | $10.00 – $15.60 |
| Washington | $5.00 – $7.20 | $9.90 – $15.40 |
| California | $5.10 – $7.30 | $10.10 – $15.70 |
| Minnesota | $5.10 – $7.30 | $10.20 – $15.80 |
| Illinois | $5.10 – $7.40 | $10.20 – $15.90 |
| New York | $5.20 – $7.50 | $10.40 – $16.20 |
| New Jersey | $5.20 – $7.60 | $10.50 – $16.30 |
What pushes the price per square foot up
- Pitch. Above about 8/12 crews need roof jacks and harnesses and lay less per day; steep roofs also have more area per footprint. The labor hours calculator shows the effect.
- Layers to remove. One layer is $1.00–$1.75 per sq ft; two layers cost more to strip and dump. See the roof tear-off cost page.
- Complexity. Valleys, dormers, skylights and chimneys add flashing, cutting and waste — 15% waste on a cut-up hip roof against 10% on a plain gable (waste calculator).
- Decking. Soft or delaminated sheathing found at tear-off is replaced at about $70–$120 per sheet.
- Code items. Ice barrier at the eaves in cold climates, drip edge, and two layers of underlayment on 2/12–4/12 roofs (IRC R905.1.1).
Want a line-by-line number? The roof replacement cost calculator prices a whole job from house size, and the roof project estimator adds underlayment, vents and ZIP-based labour.
🔗 Related Roofing Calculators
- Roof Replacement Cost Calculator — Whole-job price from house size and pitch
- Roof Cost by State — 50 state price guides with the method
- Roof Replacement Cost by City — 100 metros, per square and per home
- Asphalt Shingle Roof Cost — 3-tab vs architectural, cost per year
- Metal Roofing Cost Calculator — Panels, standing seam, stone-coated
- Roof Square Footage Calculator — Footprint × pitch = roof area and squares
· Reviewed by the Smart Home Calculators editorial team