Roof Replacement Cost Calculator
Estimate the cost of a new roof by roof size, pitch, material type, and labor. Get material costs, labor costs, and total project cost with a detailed breakdown. Adjusts for tear-off, underlayment, and waste. Free, no sign-up required.
Steeper roofs have more surface area and cost more to install.
Enter your own material cost per square (100 sq ft).
Typical: $150-$300/square. Steeper roofs and premium materials cost more.
Typical: $100-$150/square for removing and disposing of old roofing.
🏠 Estimated Total Cost
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Roof Area
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Materials
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Labor
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📊 Cost Breakdown
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1 square = 100 sq ft of roof surface. Costs vary by region, contractor, and project complexity.
💡 What this means
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🛒 Get roofing materials & supplies
🛒 See roofing supplies on Amazon →📝 How to use this roof cost calculator
- Enter house dimensions — measure the length and width of your house footprint (exterior wall to exterior wall).
- Select roof pitch — the steepness of your roof. A 6/12 pitch is most common for single-story homes. The calculator adjusts the roof surface area using a pitch multiplier.
- Choose roofing material — asphalt shingles (most common), metal (longest-lasting), tile (premium), wood shake, slate, or set a custom cost per square.
- Set labor cost — adjust the labor rate per square for your region. Steeper roofs and premium materials cost more.
- Toggle options — include tear-off, underlayment, and a 10% waste factor as needed.
- Click Calculate — see total cost, cost per square, and a detailed breakdown.
📌 5 tips for roof replacement
- ✓ Get 3+ quotes from licensed contractors. Roofing prices vary 30-50% between contractors for the same materials. Ensure each quote includes tear-off, underlayment, flashing, disposal, and warranty details in writing.
- ✓ Replace in late spring or early fall. Roofing needs temperatures above 50°F (10°C) for proper shingle sealing. Summer is peak season with peak prices; off-season discounts of 10-15% are common in late fall and winter in mild climates.
- ✓ Don't skip the tear-off. Installing over 2+ layers is a building code violation in most areas and voids warranties. A proper tear-off lets the contractor inspect the roof deck for rot and damage, which can save thousands in emergency repairs later.
- ✓ Upgrade your underlayment. Standard felt underlayment costs $30/square; synthetic underlayment costs $50/square but is 10x stronger, self-sealing around nails, and adds 5-10 years to the roof's service life. The upgrade costs $200-$500 on an average roof.
- ✓ Order 10-15% extra material. Waste from cutting around valleys, chimneys, vents, and edges adds up fast. Running short mid-project means delivery fees and potential color mismatches from a different production batch. Leftover unopened bundles can usually be returned.
Disclaimer: This calculator provides estimates for educational purposes only. Actual roof replacement costs vary significantly based on location, roof complexity (valleys, dormers, skylights), accessibility, contractor rates, time of year, and local building codes. Always obtain professional quotes from licensed roofing contractors before making budget decisions. This tool is not a substitute for professional roofing advice.
Related Tools
Roof replacement is part of a larger home maintenance picture. These nine calculators cover the rest of your home improvement and ownership costs — from measuring surfaces to estimating materials and maintenance budgets.
- Paint Calculator — estimate gallons of paint for interior and exterior projects alongside your roof replacement.
- Square Footage Calculator — measure your home's footprint to get accurate roof area estimates.
- Home Maintenance Cost Calculator — budget annual home upkeep including roof repairs and eventual replacement.
- Home Equity Calculator — see how a new roof affects your home's value and equity position.
- Flooring Cost Calculator — estimate flooring costs for interior renovations you might do alongside a roof replacement.
- Concrete Calculator — estimate cubic yards and bags for driveway or foundation projects.
- Drywall Calculator — estimate drywall sheets, mud, tape, and screws for interior wall projects.
- Tile Calculator — figure out how many boxes of tile and grout you need for floors and walls.
- Lawn Care Cost Calculator — estimate the annual cost of lawn maintenance for your property.