COMPLETE TOOL DIRECTORY
Roofing Calculators & Tools Directory
Explore our full suite of 30 mathematically verified, code-compliant roofing calculators, material estimators, structural load utilities, and cost estimators.
Roof Pitch & Slope Calculators
Roof Pitch Calculator
Find roof pitch ratio (X/12), angle in degrees, slope grade percentage, and pitch multiplier with an interactive visual diagram.
Roof Slope Calculator
Convert seamlessly between roof pitch ratio (X/12), slope angle in degrees, grade percentage, and rise/run.
Roof Pitch to Degrees Converter
Instant conversion tool between standard roof pitch ratios and precise geometric angles in degrees.
Rise Run Calculator
Solve for vertical rise, horizontal run, or pitch slope using standard framing and roof measurements.
Roof Measurement & Waste
Roof Square Footage Calculator
Calculate true sloped roof square footage from horizontal building dimensions, eave overhangs, and pitch.
Roof Area Calculator
Calculate multi-plane roof surface area with pitch multipliers, waste allowances, and square conversions.
Roofing Square Calculator
Convert between square feet and roofing squares (100 sq ft) with customizable waste margins.
Roof Waste Calculator
Calculate the extra material buffer and order quantity needed for valleys, hips, gables, and starter strips.
Roof Framing & Shape Geometry
Hip Roof Calculator
Calculate symmetrical hip roof surface area, common rafter length, hip rafter length, and ridge board dimensions.
Gable Roof Calculator
Calculate dual-pitch gable roof slope length, ridge length, peak rise, and total sloped surface area with overhangs.
Shed Roof Calculator
Calculate single-slope mono-pitch shed and lean-to roof slope length, elevation rise, and surface area.
Flat Roof Calculator
Calculate flat and low-slope roof square footage, HVAC curb exclusions, and single-ply membrane roll quantities.
Rafter Length Calculator
Find theoretical rafter length, vertical rise, slope angle, and total rafter length including eave overhang.
Rafter Calculator
Complete roof rafter sizing and framing tool for span, run, pitch, lumber dimensions, and plumb cut angles.
Roof Truss Calculator
Estimate truss quantities, top chord length, peak rise, and spacing layout across any building length.
Roofing Materials & Coverings
Shingle Calculator
Estimate shingle bundle counts (3 bundles/square), roofing squares, and starter strip buffer.
Metal Roofing Calculator
Calculate metal roof panel counts (36″, 16″, 12″), total linear feet, and total material square footage.
Roofing Underlayment Calculator
Calculate roll counts for synthetic underlayment, #15 felt, #30 felt, and peel-and-stick membrane.
Roof Tile Calculator
Estimate concrete, clay, or slate roof tile piece counts, package bundles, and roofing squares.
Roof Insulation Calculator
Calculate required attic insulation thickness (inches) and total cubic volume to achieve target R-values.
Roofing Costs & Pricing Estimators
Roof Cost Calculator
Estimate complete new roof installation costs based on square footage, materials, pitch, and labor.
Roof Replacement Cost Calculator
Calculate itemized replacement costs including tear-off layers, decking repairs, and new roofing materials.
Metal Roof Cost Calculator
Compare installed costs for architectural standing seam metal vs. exposed-fastener corrugated metal panels.
Ventilation, Drainage & Structural Loads
Roof Ventilation Calculator
Calculate balanced attic Net Free Vent Area (NFVA) for soffit intake and ridge exhaust under IRC §R806.
Attic Vent Calculator
Convert required ventilation area into unit counts for static box vents, soffits, turbines, or ridge vents.
Roof Drainage Calculator
Calculate peak storm runoff flow rate (GPM) based on catchment area and rainfall intensity.
Downspout Size Calculator
Determine downspout quantity and sizing capacity (2×3″ vs. 3×4″) needed to handle roof runoff flow.
Gutter Slope Calculator
Determine exact gutter pitch, vertical drop, and chalk-line elevation slope for proper drainage.
Roof Load Calculator
Calculate total structural weight and combined PSF from user-supplied dead, live, snow, and wind loads.
Roof Snow Load Calculator
Estimate flat (Pf) and sloped roof (Ps) snow loads under ASCE 7-22 engineering methodology.