All Roofing Calculators

Free tools for pitch, area, slope, and roofing material estimation.

• Roof Pitch Calculator
  Free roof pitch calculator. Convert between rise/run, angle in degrees, and rafter length. Get pitch as X/12 plus the slope factor for area calculations.
• Roof Leak Repair Cost Calculator
  Estimate 2026 roof leak repair cost by leak type, roof material, height, access and emergency premium — pinhole through structural deck rot itemised.
• Roof Square Footage Calculator
  Free roof square footage calculator. Get surface area, roofing squares, and shingle bundles needed based on footprint and pitch. Includes overhang and waste.
• Roofing Square Calculator
  Convert sq ft or m² into roofing squares with this roofing square calculator — shingle bundles, underlayment rolls, drip edge and nails with waste added.
• Roof Repair Cost Calculator
  Estimate 2026 roof repair cost by issue — shingle replacement, flashing rebuild, leak trace, pipe-boot swap and partial re-deck with labor totals.
• Roof Shingle Calculator
  Use this roof shingle calculator for total pieces, bundles, starter and ridge cap from footprint, pitch and waste — 3-tab, architectural, cedar, tile.
• Solar Roof Cost Calculator
  Estimate 2026 solar roof cost for Tesla Solar Roof, GAF Timberline Solar and CertainTeed Apollo II — per-watt installed with battery and inverter pricing.
• Asphalt Shingle Cost Calculator
  Estimate 2026 asphalt shingle cost per square for 3-tab, architectural and luxury laminate with tear-off, underlayment, ice & water, labor and disposal.
• Roof Cost Calculator
  Estimate full installed roof cost in 2026 — asphalt shingles, metal, tile and slate — itemised by material, labor, tear-off, disposal and permit fees.
• Roof Inspection Cost Calculator
  Budget a 2026 roof inspection — visual, drone and infrared scans with moisture mapping and a written report, by roof size, pitch and storey count.
• Roof Replacement Cost Calculator
  Get a 2026 roof replacement cost band — low / mid / high — by material, region, pitch, complexity and storeys, with insurance and financing options.
• Roof Truss Calculator
  Calculate prefab roof truss geometry, member lengths, count and delivered cost. Fink, king, queen, scissor and attic trusses sized to IRC 2024 and TPI 1-2014.
• Roofing Cost Calculator
  Compare 2026 roofing cost across asphalt, metal, tile, slate and membrane on the same job — installed cost, dollars per sq ft, service life, cost-per-year.
• Attic Insulation Calculator
  Calculate top-up depth, bag count and material cost for blown cellulose, blown fibreglass, batts or mineral wool. IECC 2021 climate-zone targets, R-19 to R-60.
• Chimney Repair Cost Calculator
  Estimate 2026 chimney repair cost — crown rebuild, tuck-pointing, brick replacement, cap, flue liner, waterproofing and above-roof rebuild line items.
• Gutter Guard Cost Calculator
  Estimate 2026 gutter guard cost per linear foot for micromesh, reverse-curve, foam and brush inserts with installation labor and existing-debris cleanout.
• Gutter Installation Cost Calculator
  Estimate 2026 gutter installation cost by linear foot, profile, material and building height — itemised labor, downspouts, leaf guards, tear-off, permit.
• Metal Roof Calculator
  Use this metal roof calculator for panel count, trim, fasteners and installed cost — standing-seam, corrugated, ribbed, shingle and stone-coated.
• Metal Roof Cost Calculator
  Calculate installed metal roof cost across standing-seam, corrugated, R-panel, stone-coated, aluminium, zinc and copper with low/mid/high quotes.
• Roof Area Calculator
  Use this roof area calculator to compute actual roof surface area in sq ft or m² for gable, hip, shed and L-shape roofs from footprint, pitch and overhang.
• Roof Tear-Off Cost Calculator
  Estimate 2026 roof tear-off cost per square for one, two and three layers — disposal fees, dumpster rental, nail sweep and substrate inspection labor.
• Roof Cleaning Cost Calculator
  Estimate 2026 US roof cleaning cost by area, soft wash vs pressure wash, moss/algae level, pitch and storey. ARMA-compliant pricing for asphalt, tile, metal.
• Gutter Slope Calculator
  Calculate gutter slope, total fall and per-section drop for any run using the NRCA/SMACNA quarter-inch per 10 ft standard or a custom 1:N pitch ratio.
• Snow Load Calculator
  Calculate roof snow load per ASCE 7-22 and IBC 2024 — returns pf, ps, exposure (Ce), thermal (Ct), importance (Is) and slope (Cs) factors step by step.
• Dormer Installation Cost Calculator
  Estimate 2026 dormer installation cost for gable, shed and eyebrow dormers — framing, sheathing, roofing, siding, window, drywall and permit line items.
• Roof Flashing Cost Calculator
  Estimate 2026 roof flashing cost — step, valley, drip edge, kickout and apron flashing in aluminum, copper, lead and steel with mortar reglet and sealant.
• Roof Vent Calculator
  Size attic ventilation per IRC R806.2 — total Net Free Area, balanced soffit intake plus ridge or gable exhaust, with vent counts.
• Roof Ventilation Cost Calculator
  Estimate 2026 roof ventilation cost for ridge vent, box vent, turbine, soffit and powered fans — NFA calculations and 1/300 IRC compliance built in.
• Slate Roof Cost Calculator
  Estimate 2026 slate roof cost per square for Vermont, Pennsylvania, Spanish and Brazilian slate — graduated thickness, copper nails, snow guards and labor.
• Soffit & Fascia Cost Calculator
  Estimate 2026 soffit and fascia cost per linear foot for aluminum, vinyl, wood and PVC — vented or solid, with trim, J-channel, drip edge and labor.
• Standing Seam Metal Roof Cost Calculator
  Estimate 2026 standing seam metal roof cost per square for 24 ga and 22 ga snap-lock and mechanical-lock panels in Kynar 500 paint with clips and trim.
• Copper Roof Cost Calculator
  Estimate 2026 copper roof cost per square for 16 oz and 20 oz standing-seam and flat-lock panels with custom fabrication, soldered seams and tear-off.
• EPDM Roof Cost Calculator
  Estimate 2026 EPDM roof cost per square for 45 mil, 60 mil and 90 mil fully-adhered, ballasted or mechanically-attached rubber with seam tape and edging.
• Hail Damage Assessment Calculator
  Assess hail damage on shingles, metal and tile roofs from hailstone diameter, wind speed and slope exposure — repair vs full-replacement decision matrix.
• Roof Estimate Calculator
  Build a contractor-style roof estimate with line-item costs, overhead, profit, contingency and tax plus a good/better/best 3-tier offer and 30/40/30 draws.
• Roof Rafter Calculator
  Calculate stick-built common rafter length, count, recommended lumber size for snow load and total cost. Sized to IRC 2024 Table R802.5.1(2).
• Roof Replacement Calculator
  Plan a complete 2026 roof replacement: tear-off, decking allowance, code upgrades, dumpster size, crew duration, and full installed cost — itemized by line.
• Shed Roof Rise Calculator
  Calculate shed roof rise from span and pitch (X/12 or degrees) or solve from a target rise — returns rafter length, slope factor and area multiplier.
• Skylight Installation Cost Calculator
  Estimate 2026 skylight installation cost for fixed, vented and solar Velux and Fakro units — curb, flashing kit, drywall finish and tear-in labor.
• Tile Roof Cost Calculator
  Estimate 2026 tile roof cost per square for clay, concrete and lightweight tiles — barrel, S-tile and flat profiles with batten, underlay and ridge labor.
• TPO Roof Cost Calculator
  Estimate 2026 TPO roof cost per square for 45 mil, 60 mil and 80 mil hot-air-welded membrane in white, grey or tan with cover board and insulation tiers.
• Attic Insulation Cost Calculator
  Estimate 2026 attic insulation cost in USD across blown cellulose, fibreglass, batts and mineral wool with material, labor and IECC climate-zone totals.
• Corrugated Metal Roof Cost Calculator
  Estimate 2026 corrugated metal roof cost per square for 26 ga and 29 ga Galvalume, painted steel and aluminum with screws, closures and trim labor.
• Gambrel Roof Calculator
  Free gambrel roof calculator. Get surface area and material estimates for two-pitch barn-style roofs. Handles upper and lower slopes with break height.
• Ice Dam Risk Calculator
  Assess ice dam risk from climate zone, pitch, attic R-value, ventilation and snow depth — with heat-cable, insulation and ventilation remediation costs.
• PVC Roof Cost Calculator
  Estimate 2026 PVC roof cost per square for 50 mil, 60 mil and 80 mil hot-air-welded membrane — fully-adhered or mechanically-fastened with cover board.
• Composite Roof Cost Calculator
  Estimate 2026 composite roof cost per square for synthetic slate and shake from DaVinci, Brava, EcoStar and CeDur with underlayment, hip and ridge labor.
• Clay Tile Roof Cost Calculator
  Estimate 2026 clay tile roof cost per square for two-piece mission, S-tile and flat profiles, with batten, underlayment, ridge cap, hip and field labor.
• Roof Underlayment Cost Calculator
  Estimate 2026 roof underlayment cost per square for 15 lb felt, 30 lb felt, synthetic and self-adhered ice & water shield by roof area and pitch.
• Calculate Roofing — Full Material Takeoff
  Calculate roofing materials in minutes — shingle bundles, underlayment, ice & water shield, drip edge, ridge cap, starter, nails, OSB plus cost.
• Cedar Shake Roof Cost Calculator
  Estimate 2026 cedar shake roof cost per square for #1 Blue Label hand-split, taper-sawn or fire-treated, with batten, Cedar Breather and tear-off.
• Chimney Flashing Cost Calculator
  Estimate 2026 chimney flashing cost — step, counter, apron and cricket flashing in aluminum, copper or lead, including mortar reglet cuts and tear-off.
• Flat Roof Replacement Cost Calculator
  Estimate flat roof replacement cost in 2026 across TPO, EPDM, PVC, modified bitumen and BUR with tear-off, insulation, parapet flashing line items.
• Green Roof Cost Calculator
  Estimate 2026 green roof cost per square for extensive, semi-intensive and intensive systems with drainage layer, growing medium and waterproofing.
• Hip Roof Calculator
  Use this hip roof calculator to compute surface area, common rafter, hip rafter and ridge length for any equal-pitch four-sided hip in feet or meters.
• Roof Deck Replacement Cost Calculator
  Estimate 2026 roof deck replacement cost per sf for 7/16 OSB, 1/2 and 5/8 plywood, plank decking and partial-sheet swaps with tear-off and nailing labor.
• Zinc Roof Cost Calculator
  Estimate 2026 zinc roof cost per square for VMZINC, RHEINZINK and elZinc standing-seam, flat-lock and shingle panels with structural separation underlay.
• Polycarbonate Roof Cost Calculator
  Estimate 2026 polycarbonate roof cost per sf for multiwall, corrugated and solid sheets — UV-protected, twinwall and triplewall with structural framing.
• Spray Foam Roof Cost Calculator
  Estimate 2026 spray foam roof cost per square for closed-cell SPF at 1.5–3 inches with silicone or acrylic topcoat — re-cover or new install pricing.
• Cool Roof Savings Calculator
  Project 2026 cool roof savings from SRI, roof area and climate zone — annual kWh, $/yr cooling reduction and ENERGY STAR roof payback period.
• Gutter Size Calculator
  Find the right gutter size from roof area, pitch and rainfall using SMACNA Tbl 1-2 / IPC 1106 — K-style, half-round, box plus downspout sizing.
• Roof Coating Cost Calculator
  Estimate 2026 roof coating cost per square for silicone, acrylic, urethane and aluminized — single-coat and two-coat systems with primer and prep labor.
• Mansard Roof Cost Calculator
  Estimate 2026 mansard roof cost for slate, asphalt, metal and tile on the steep face — framing complexity, dormer count and 4-side wrap labor included.
• Modified Bitumen Roof Cost Calculator
  Estimate 2026 modified bitumen roof cost per square for APP torch-down and SBS cold-applied systems with base sheet, cap sheet and granule surface.
• Built-Up Roof Cost Calculator
  Estimate 2026 built up roof cost per square for 3-ply and 4-ply BUR with gravel surfacing, insulation, base sheet, flashing and tear-off line items.
• Gutter Cleaning Cost Calculator
  Estimate 2026 gutter cleaning cost by linear foot, storey, debris tier and access — service-call floor, downspout flush, leaf-guard reinstall, repairs.
• Gutter Cost Calculator
  Compare 2026 gutter cost across vinyl, aluminum, galvalume, zinc and copper on the same job — DIY material vs full pro install plus 30-year ownership cost.
• Gutter Replacement Cost Calculator
  Estimate 2026 gutter replacement cost — tear-off, fascia repair, new seamless aluminum, steel or copper, downspouts, drip edge, leaf guards by linear foot.
• Ridge Cap Cost Calculator
  Estimate 2026 ridge cap cost per linear foot for asphalt hip-and-ridge shingles, metal closures and tile ridge — vented or solid, with nailing and sealant.
• Valley Flashing Cost Calculator
  Estimate 2026 valley flashing cost per linear foot for open, closed-cut and woven valleys in aluminum, copper and steel — with ice & water underlay below.
• Downspout Calculator
  Size downspouts from roof area, pitch and rainfall using the SMACNA 1 sq in / 100 sq ft rule plus IPC 1106 rational method — rectangular and round profiles.