Roofing Calculator

Calculate roofing materials, shingles, and roof area

Roof Specifications

Enter your roof dimensions and material preferences

Roof Length (feet)

Roof Width (feet)

Roof Pitch

Roofing Material

Roofing Guide

Calculate accurate roof surface area accounting for pitch to determine material needs

Measure roof length and width. Apply pitch multiplier for sloped roof calculations

Roofing materials are sold by the square (100 sq ft) for standardized ordering

Divide total roof area by 100. Round up to nearest whole square for material orders

Roof pitch affects actual surface area and material requirements significantly

Steeper pitches require more materials. Use pitch multiplier for accurate calculations

Roofing Calculator Information

Complete guide to roofing calculations and material planning

What	Why	When/How
Roof Area Calculator	Calculate accurate roof surface area accounting for pitch to determine material needs	Measure roof length and width. Apply pitch multiplier for sloped roof calculations
Roofing Squares	Roofing materials are sold by the square (100 sq ft) for standardized ordering	Divide total roof area by 100. Round up to nearest whole square for material orders
Pitch Factor Calculation	Roof pitch affects actual surface area and material requirements significantly	Steeper pitches require more materials. Use pitch multiplier for accurate calculations
Material Type Selection	Different roofing materials have varying costs, lifespans, and installation requirements	Consider climate, budget, and building codes. Asphalt cheapest, slate most durable
Waste and Overage	Account for cuts, mistakes, and future repairs with appropriate material overage	Add 10-15% extra materials. Complex roofs with valleys need higher waste factors
Installation Complexity	Roof complexity affects labor costs and installation time significantly	Simple gable roofs cost less to install than complex hip roofs with dormers

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