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7 focused calculator categories
Category hubs keep the library easy to scan and create clear topical paths for people and search engines.
73 calculators
Concrete & Masonry
CMU bond-beam grout, brick soldier courses, concrete patch material, cylinder weight, control-joint sealant, masonry wall ties, wire mesh, brick mortar cost, bonding agents, masonry sealers, slab cost, delivery cost, yield checks, pumping cost, vapor barriers, demolition weight, surface area, cure-water planning, saw cuts, formwork, crack filler, rebar, flatwork, footings, retaining walls and veneer calculators.
Explore category73 calculators
Flooring & Finishes
Drop-ceiling grid, carpet tack strip, drywall furring channel, stair carpet, drywall adhesive, tile leveling clips, drywall soundproofing, resilient channels, acoustic sealant, tile backer-board screws, floor underlayment cost, grout sealer, drywall and tile installation cost, paint labor, flooring labor, floor screed, tile spacers, backer board, drywall lift rental, wallpaper, paint, primer, trim, leveling compound, wall panels, hardwood, laminate, vinyl plank, carpet and plaster calculators.
Explore category36 calculators
Landscaping Materials
Gabion stone, landscape timbers, lawn topdressing, landscape boulder weight, tree watering, paver patio cost, topsoil delivery, mulch delivery, soil amendment, gravel compaction, tree mulch rings, paver restraints, drainage stone, parking pads, garden paths, raised-bed soil, landscape rock, gravel, paver bases, edging, sod, seed, fertilizer and fabric calculators.
Explore category30 calculators
Excavation & Drainage
Berm volume, culvert pipe ordering, erosion-control blankets, silt fence, French-drain gravel, catch-basin gravel, excavation cost, gutter capacity, trench bedding, gutter slope, excavation truckloads, soil compaction, foundation drainage, downspout sizing, asphalt sealcoat, dumpsters, rain gardens, dry wells, trench spoil, swales, roof drainage, runoff and pond calculators.
Explore category94 calculators
Structures & Carpentry
Joist hangers, wall plate lumber, deck balusters, roofing starter strip, plywood cost, gutter hangers, hidden deck fasteners, soffit materials, roof fascia boards, deck-post quantity, floor-joist blocking, roof replacement, deck building, fence installation, window installation, roof area, valleys, step flashing, house-wrap tape, siding starter strips, hurricane ties, subfloor adhesive, crawl-space vapor barriers, roofing, decks, fences, framing, lumber, plywood, sheds, pergolas, doors, windows, cabinetry, stairs and trim calculators.
Explore category71 calculators
Energy & Electrical
Air-compressor tank fill time, air-compressor running cost, solar panel row spacing, solar battery payback, HVAC filter cost, battery cost per cycle, insulation installation cost, attic insulation, duct air velocity, electric space-heater cost, heating and cooling, condensate-drain planning, solar, generators, lighting, electrical loads, running costs, ventilation, energy savings and backup-power calculators.
Explore category51 calculators
Water & Mechanical
Rainwater tank overflow, irrigation dripline length, sump-pump running cost, pool heating cost, well-pump running cost, water-heater energy cost, pool heating time, pool fill cost, rainwater payback, irrigation cost, plumbing flow, hot-water recirculation heat loss, hot-tub heating, pipe insulation, water usage, pressure tanks, softeners, cisterns, septic, pumps, wells and storage calculators.
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Popular project calculators
Concrete Slab Calculator
Estimate materials, quantities, waste and cost with the concrete slab calculator.
Open calculator Flooring & FinishesPaint Coverage Calculator
Estimate materials, quantities, waste and cost with the paint coverage calculator.
Open calculator Flooring & FinishesFlooring Calculator
Estimate materials, quantities, waste and cost with the flooring calculator.
Open calculator Flooring & FinishesDrywall Calculator
Estimate materials, quantities, waste and cost with the drywall calculator.
Open calculator Landscaping MaterialsGravel Calculator
Estimate materials, quantities, waste and cost with the gravel calculator.
Open calculator Landscaping MaterialsPaver Calculator
Estimate materials, quantities, waste and cost with the paver calculator.
Open calculator Structures & CarpentryRoofing & Shingle Calculator
Estimate materials, quantities, waste and cost with the roofing & shingle calculator.
Open calculator Energy & ElectricalHVAC BTU Calculator
Estimate materials, quantities, waste and cost with the hvac btu calculator.
Open calculator Energy & ElectricalSolar Panel Calculator
Estimate materials, quantities, waste and cost with the solar panel calculator.
Open calculatorReference library
Charts and guides worth saving
Use these practical references to check bag yields, roof geometry and drywall handling before opening the detailed calculator.
Concrete reference
Concrete Bag Yield Chart
Compare common bag sizes, approximate yield and bags per cubic yard.
Open guideRoofing reference
Roof Pitch Multiplier Chart
Convert plan area into sloped surface area for common roof pitches.
Open guideDrywall reference
Drywall Size & Weight Guide
Compare sheet area, example product weights and handling considerations.
Open guideSpecialist tools
Go beyond the core estimate.
Use focused supporting calculators after the main quantity is known, without turning the homepage into an endless list.
Open full directoryUseful results, not one number
Tools include waste, packaging, delivery quantities, accessory materials and cost where relevant.
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Formulas and assumptions are visible so estimates can be checked against supplier specifications.
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