Free roof replacement cost calculator (2026)
Instant estimate by roof size, material, and city. No signup, no phone number.
Don't know it? Home footprint × 1.1 (low slope), × 1.3 (average), × 1.5 (steep).
Estimated cost, installed
$9,000 – $15,000
$4.50 – $7.50 per sq ft
Includes materials, labor, underlayment, and standard single-layer tear-off. Estimates based on 2026 averages adjusted for local construction costs — always get multiple local quotes.
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Compare materials at your size and location
| Material | Per sq ft | Your roof | Typical lifespan |
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How this calculator works
Estimates start from 2026 national installed-cost ranges for each material — covering shingles or panels, underlayment, labor, disposal, and standard tear-off — then adjust for your metro area's labor and material costs. The result is a realistic budgeting range, not a quote: pitch, stories, decking condition, skylights, and access can all move the final price.
Frequently asked questions
- How do I calculate my roof's square footage?
- Multiply your home's footprint by a pitch factor: ×1.1 for low slope, ×1.3 for average, ×1.5 for steep. A 1,600 sq ft single-story home with average pitch has roughly 2,100 sq ft of roof.
- What does a roof cost per square foot in 2026?
- Roughly $4.50–$7.50 for asphalt shingles, $8.50–$14.50 for standing-seam metal, $12–$22 for tile, and $6–$10 for flat roofing, installed — before local adjustment.
- Does the estimate include tear-off?
- Yes — standard single-layer tear-off and disposal are included. Extra layers, decking repair, and complex rooflines add cost.