Roofing material and labor estimator

Roofing Cost Calculator

Estimate rough asphalt-shingle roofing cost from measured roof area, waste, bundles per square, bundle cost, underlayment allowance, nails, labor rate, and markup. Use it for early planning before supplier quotes and a roof walk.

Units

Measured roof area (ft²)Waste / cut allowance (%)Bundles per square Cost per shingle bundle ($)Underlayment allowance ($/ft²)Nails per square Nails per box Cost per nail box ($)Labor rate ($/ft²)Markup / overhead (%)

Rough total

Material subtotal

Labor subtotal

Rough cost

Roofing cost needs roof-specific checks

Pitch, height, tear-off, decking repair, valleys, hips, flashing, ventilation, underlayment code, disposal, access, taxes, and local labor can change the final price. This is not a roofing bid.

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Roof Shingle Calculator

Estimate bundles and roof squares before pricing.

Roofing Nails Calculator

Check nail box counts for the shingle order.

Roof Underlayment Calculator

Estimate underlayment rolls for the same roof.

View all

Roofing cost formula

Order area = roof area × (1 + waste %)

Roof squares = order area ÷ 100

Bundles = roof squares × bundles per square, rounded up

Nail boxes = roof squares × nails per square ÷ nails per box, rounded up

Total = (materials + roof area × labor rate) × (1 + markup %)

Sample takeoff

A 2,000 ft² shingle roof with 10% waste, three bundles per square, US$42 bundles, US$0.18/ft² underlayment allowance, nails, US$1.75/ft² labor, and 10% markup is about US$7,377.A 185.8 m² shingle roof with 10% waste, three bundles per square, US$42 bundles, US$1.94/m² underlayment allowance, nails, US$18.83/m² labor, and 10% markup is about US$7,377.

Roofing Cost Calculator FAQ

How do I estimate roofing cost?+

Measure roof area, add waste, convert to roof squares, price shingle bundles, add underlayment, nails, labor, and markup.Measure roof area, add waste, convert to roof squares, price shingle bundles, add underlayment, nails, labor, and markup.

Does this include tear-off?+

No. Add tear-off, disposal, sheathing repair, flashing, vents, drip edge, permits, and difficult access as separate allowances.No. Add tear-off, disposal, sheathing repair, flashing, vents, drip edge, permits, and difficult access as separate allowances.

Can I use this for metal roofing?+

Use it only as a rough planning model. Metal roofing normally needs panel length, trim, clips, screws, and product-specific pricing.Use it only as a rough planning model. Metal roofing normally needs panel length, trim, clips, screws, and product-specific pricing.