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Roofing Roofing Calculator – Area, Shingles, Underlayment & Cost Estimate roof area, shingles, underlayment, ridge caps, nails, waste factor, and total cost for gable, hip, shed, and complex roofs. Ideal for homeowners, contractors, and estimators. Roofing Material & Cost Calculator Unit system Imperial (ft, sq ft) Metric (m, m²) Waste factor (%) Typical: 5–10% simple gable, 10–15% hip/complex roofs. Roof sections + Add section Material coverage & pricing (optional) Shingle coverage per bundle sq ft/bundle Typical 3-tab bundle ≈ 33.3 sq ft of coverage. Price per shingle bundle $ Underlayment coverage per roll sq ft/roll Price per underlayment roll $ Ridge cap coverage per bundle linear ft/bundle Price per ridge cap bundle $ Nails per 100 sq ft Approx. 4 nails per shingle, 80 shingles per square. Labor cost per unit area (optional) $ Per roofing square (100 sq ft). Calculate roofing materials Results Roof area Total sloped area (no waste): With waste factor: Materials Cost estimate This is a planning estimate only. Get written quotes from licensed roofing contractors before starting work. How this roofing calculator works This roofing calculator is designed to be more practical than simple “length × width” tools. It lets you: Add multiple roof sections (for L-shaped or complex roofs). Account for roof pitch, overhangs, and ridge length. Estimate shingles, underlayment, ridge caps, nails, and cost. Switch between imperial (ft, sq ft) and metric (m, m²) units. 1. Roof section geometry Each section is treated as a simple rectangle in plan view. You enter: Length (horizontal run along the eave). Width (horizontal run from eave to eave, not along the slope). Overhang (optional extension beyond walls, applied to all sides). Pitch (e.g., 4:12, 6:12, 8:12). Ridge length for that section (if applicable). The flat footprint area is: Footprint area = (length + 2 × overhang) × (width + 2 × overhang) Roof pitch is converted to a pitch factor : Pitch factor = √(1 + (rise

Roofing Roofing Calculator – Area, Shingles, Underlayment & Cost Estimate roof area, shingles, underlayment, ridge caps, nails, waste factor, and total cost for gable, hip, shed, and complex roofs. Ideal for homeowners, contractors, and estimators. Roofing Material & Cost Calculator Unit system Imperial (ft, sq ft) Metric (m, m²) Waste factor (%) Typical: 5–10% simple gable, 10–15% hip/complex roofs. Roof sections + Add section Material coverage & pricing (optional) Shingle coverage per bundle sq ft/bundle Typical 3-tab bundle ≈ 33.3 sq ft of coverage. Price per shingle bundle $ Underlayment coverage per roll sq ft/roll Price per underlayment roll $ Ridge cap coverage per bundle linear ft/bundle Price per ridge cap bundle $ Nails per 100 sq ft Approx. 4 nails per shingle, 80 shingles per square. Labor cost per unit area (optional) $ Per roofing square (100 sq ft). Calculate roofing materials Results Roof area Total sloped area (no waste): With waste factor: Materials Cost estimate This is a planning estimate only. Get written quotes from licensed roofing contractors before starting work. How this roofing calculator works This roofing calculator is designed to be more practical than simple “length × width” tools. It lets you: Add multiple roof sections (for L-shaped or complex roofs). Account for roof pitch, overhangs, and ridge length. Estimate shingles, underlayment, ridge caps, nails, and cost. Switch between imperial (ft, sq ft) and metric (m, m²) units. 1. Roof section geometry Each section is treated as a simple rectangle in plan view. You enter: Length (horizontal run along the eave). Width (horizontal run from eave to eave, not along the slope). Overhang (optional extension beyond walls, applied to all sides). Pitch (e.g., 4:12, 6:12, 8:12). Ridge length for that section (if applicable). The flat footprint area is: Footprint area = (length + 2 × overhang) × (width + 2 × overhang) Roof pitch is converted to a pitch factor : Pitch factor = √(1 + (rise

Calculators in Roofing Roofing Calculator – Area, Shingles, Underlayment & Cost Estimate roof area, shingles, underlayment, ridge caps, nails, waste factor, and total cost for gable, hip, shed, and complex roofs. Ideal for homeowners, contractors, and estimators. Roofing Material & Cost Calculator Unit system Imperial (ft, sq ft) Metric (m, m²) Waste factor (%) Typical: 5–10% simple gable, 10–15% hip/complex roofs. Roof sections + Add section Material coverage & pricing (optional) Shingle coverage per bundle sq ft/bundle Typical 3-tab bundle ≈ 33.3 sq ft of coverage. Price per shingle bundle $ Underlayment coverage per roll sq ft/roll Price per underlayment roll $ Ridge cap coverage per bundle linear ft/bundle Price per ridge cap bundle $ Nails per 100 sq ft Approx. 4 nails per shingle, 80 shingles per square. Labor cost per unit area (optional) $ Per roofing square (100 sq ft). Calculate roofing materials Results Roof area Total sloped area (no waste): With waste factor: Materials Cost estimate This is a planning estimate only. Get written quotes from licensed roofing contractors before starting work. How this roofing calculator works This roofing calculator is designed to be more practical than simple “length × width” tools. It lets you: Add multiple roof sections (for L-shaped or complex roofs). Account for roof pitch, overhangs, and ridge length. Estimate shingles, underlayment, ridge caps, nails, and cost. Switch between imperial (ft, sq ft) and metric (m, m²) units. 1. Roof section geometry Each section is treated as a simple rectangle in plan view. You enter: Length (horizontal run along the eave). Width (horizontal run from eave to eave, not along the slope). Overhang (optional extension beyond walls, applied to all sides). Pitch (e.g., 4:12, 6:12, 8:12). Ridge length for that section (if applicable). The flat footprint area is: Footprint area = (length + 2 × overhang) × (width + 2 × overhang) Roof pitch is converted to a pitch factor : Pitch factor = √(1 + (rise.

Roofing Calculator

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