Roofing Calculators
Roof area, pitch, squares, shingles and replacement cost estimators for U.S. homeowners.
50 free roofing calculators — no signup, mobile-friendly, formulas verified by our editorial team.
Featured roofing calculators
Commercial Roof Replacement Calculator
Full commercial reroof budget: system, insulation, tear-off, deck, crane and contingency.
Roof Insurance Claim Calculator
Estimate an RCV or ACV roof claim payout after depreciation and your wind/hail deductible.
Roof Replacement Cost Calculator
Estimate the full installed cost of a roof replacement including tear-off, permits and disposal.
Roofing Labor Cost Calculator
Burdened crew labor cost per square including tear-off, pitch difficulty and man-hours.
TPO Roofing Calculator
TPO membrane rolls, seam length, polyiso R-value and installed cost per square foot.
All roofing calculators
Commercial Roof Replacement Calculator
Full commercial reroof budget: system, insulation, tear-off, deck, crane and contingency.
Roof Insurance Claim Calculator
Estimate an RCV or ACV roof claim payout after depreciation and your wind/hail deductible.
Roof Replacement Cost Calculator
Estimate the full installed cost of a roof replacement including tear-off, permits and disposal.
Roofing Labor Cost Calculator
Burdened crew labor cost per square including tear-off, pitch difficulty and man-hours.
TPO Roofing Calculator
TPO membrane rolls, seam length, polyiso R-value and installed cost per square foot.
Chimney Flashing Cost Calculator
Chimney reflashing cost including step and counter flashing and a code-required cricket.
Commercial Roof Insulation Calculator
Polyiso inches, board count and payback to reach the IECC above-deck R-value.
Commercial Roof Lifecycle Cost Calculator
Present value and cost per sq ft per year across maintenance, energy and replacement.
Downspout Calculator
How many downspouts a roof needs by drainage area and rainfall intensity.
Drip Edge Calculator
Drip edge pieces for eaves and rakes including overlap and fasteners.
EPDM Roofing Calculator
EPDM rubber roof rolls, seam tape, bonding adhesive pails and installed cost.
Fascia Calculator
Fascia boards, aluminium wrap and fasteners for eave and rake runs.
Flat Roof Cost Calculator
TPO, EPDM, PVC and modified bitumen flat roof cost per square foot.
Gutter Calculator
Gutter length, sections, hangers, corners and 5 in vs 6 in sizing by drainage area.
Hail Damage Roof Estimator
Test-square hit counts, the 8-hit rule and the likely claim scope after a hailstorm.
Ice and Water Shield Calculator
Code-required eave and valley membrane coverage and rolls, adjusted for pitch.
Low-Slope Roof Drainage Calculator
Roof drains, overflow drains, peak gpm and ponding risk under the IPC and IBC.
Metal Roof Cost Calculator
Standing seam, exposed fastener and metal shingle roof cost per square.
PVC Roofing Calculator
PVC membrane takeoff, cover board, penetration flashing and installed cost per sq ft.
Ridge Cap Calculator
Hip and ridge cap bundles, cap shingles and nails for the ridge and hip lines.
Roof Area Calculator
Convert building footprint and pitch into actual roof surface area and squares.
Roof Coating Coverage Calculator
Gallons, pails and wet mils needed to hit a target dry film thickness on any roof.
Roof Flashing Calculator
Step flashing pieces, valley metal, chimney counter flashing and pipe boots.
Roof Inspection Cost Calculator
What a walk-on, drone, infrared or certification roof inspection should cost.
Roof Leak Repair Cost Calculator
Leak repair cost by source, plus rotted decking and interior ceiling repair.
Roof Lifespan Calculator
Remaining roof life by material, climate, ventilation, sun exposure and maintenance.
Roof Maintenance Budget Calculator
Annual roof upkeep plus a monthly sinking fund for the eventual replacement.
Roof Maintenance Contract Calculator
Price a preventive maintenance agreement by visits, drains, allowance, margin and term.
Roof Material Estimator
Bundles, underlayment, ice and water, starter, ridge cap, drip edge and nails.
Roof Pitch Calculator
Pitch, slope factor, roof angle and grade from rise over run.
Roof Repair vs Replacement Calculator
Compare a repair bid against a full replacement on cost per year of service.
Roof Shingles Calculator
Shingle bundles, nails and material cost for an asphalt shingle roof.
Roof Underlayment Calculator
Synthetic or felt underlayment rolls, coverage and cap nails for any roof area.
Roof Vent Calculator
Attic ventilation net free area under the 1/300 rule with balanced intake and exhaust.
Roof Waste Calculator
Correct waste factor by roof complexity and the total area to order.
Roofing Bid Calculator
Bid price that holds your margin after contingency, sales commission and financing fees.
Roofing Crew Productivity Calculator
Squares per man-day, man-hours per square and revenue per man-hour against your benchmark.
Roofing Estimate Calculator
Full contractor estimate: material with waste, labor, disposal, permits, overhead and margin.
Roofing Job Cost Calculator
Job closeout: actual cost versus estimate, change orders, callbacks and real gross profit.
Roofing Markup Calculator
Convert between markup and margin and find the markup your target roofing margin requires.
Roofing Material Cost Calculator
Supplier material cost with waste, decking, delivery, volume discount and sales tax.
Roofing Profit Margin Calculator
Gross and net margin on a roofing job after overhead, commission and warranty reserve.
Roofing Project Timeline Calculator
Crew days, permit and material lead time, weather contingency and total project duration.
Roofing Squares Calculator
Convert roof area into roofing squares and bundles to order, with waste.
Roofing Waste Cost Calculator
Tear-off tonnage, dumpster count, overage fees, load-out labor and wasted material value.
Skylight Cost Calculator
Installed skylight cost by type, size, shaft length and interior finish work.
Soffit Calculator
Soffit panels, vented share and J-channel for any eave overhang.
Spray Foam Roofing Calculator
SPF board feet, sets, field yield, R-value and protective coating gallons.
Tile Roof Cost Calculator
Concrete, clay and slate tile roof cost plus roof dead load in tons.
Wind Damage Roof Estimator
Missing and creased shingles, damage share and repair versus replacement scope after a windstorm.
Popular in roofing
Chimney Flashing Cost Calculator
Chimney reflashing cost including step and counter flashing and a code-required cricket.
Commercial Roof Insulation Calculator
Polyiso inches, board count and payback to reach the IECC above-deck R-value.
Commercial Roof Lifecycle Cost Calculator
Present value and cost per sq ft per year across maintenance, energy and replacement.
Downspout Calculator
How many downspouts a roof needs by drainage area and rainfall intensity.
Drip Edge Calculator
Drip edge pieces for eaves and rakes including overlap and fasteners.
EPDM Roofing Calculator
EPDM rubber roof rolls, seam tape, bonding adhesive pails and installed cost.
Trending in roofing
What readers are opening most this week.