Roofing, Deck & Exterior Calculators
Roofing is sold by the square (100 sq ft), and pitch changes the real surface area. Start with roof pitch and rafter length, then count shingles, size attic ventilation, and measure soffit and fascia. The exterior set covers deck materials and cost, railing and baluster spacing, fence materials, and egress window and well sizes. Each calculator explains its waste factor and shows a worked example.
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All Roofing & Exterior Calculators
Asphalt Shingle Calculator
Estimate shingle bundles, squares, underlayment and nails needed for any roof size and pitch.
Deck Material & Cost Estimator
Calculate deck materials and costs instantly. Enter dimensions, choose decking type, and get a full lumber list with price estimates. Free deck material calculator.
Deck Railing & Baluster Spacing Calculator
Get code-compliant baluster count and spacing for any deck railing length and gap requirement.
Egress Window Size & Well Calculator
Calculate egress window minimum size, opening dimensions, and window well requirements to meet IRC building code. Free egress window size calculator.
Fence Material Calculator
Calculate exactly how much fence material you need — posts, rails, pickets, concrete & more. Free fence calculator for wood, chain link, and vinyl fences.
Roof Attic Ventilation Calculator
Calculate required net free vent area (intake + exhaust) for your attic size per code ratios.
Roof Pitch & Rafter Length Calculator
Calculate roof pitch, rafter length, ridge height, and roof area instantly. Free online roof pitch calculator with visual diagram and step-by-step results.
Soffit & Fascia Material Calculator
Calculate exactly how much soffit and fascia material you need for your project. Enter dimensions and get instant material estimates, costs, and waste factors.