All Construction Calculators
48 free calculators across 15 categories
Concrete
Calculate concrete volume, bags, and cost for slabs, footings, columns, and more.
Lumber & Framing
Board feet, stud counts, deck lumber, and framing material calculators.
Roofing
Shingles, underlayment, metal roofing, and pitch calculators.
Flooring
Hardwood, tile, carpet, and laminate flooring material calculators.
Paint & Stain
Interior paint, exterior paint, and fence stain coverage calculators.
Framing
Wall framing, header sizing, and structural material calculators.
Fencing
Fence material, post, rail, and picket calculators.
Decking
Deck boards, joists, posts, and composite decking calculators.
Electrical
Wire gauge, circuit load, conduit fill, and outlet spacing calculators.
Plumbing
Pipe sizing, flow rate, and drain slope calculators.
Landscaping
Mulch, gravel, topsoil, and sod calculators for yard and garden projects.
Masonry
Brick, block, paver, and mortar calculators for walls, patios, and driveways.
HVAC
Air conditioner sizing, insulation R-value, and duct calculators.
Drywall
Drywall sheet, joint compound, and tape calculators for walls and ceilings.
Specialty
Pool volume, stucco, waterproofing, and other specialty construction calculators.
Concrete Slab Calculator
ConcreteCalculate exactly how much concrete you need for a slab — cubic yards, bags of pre-mix, and estimated cost.
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Concrete Footing Calculator
ConcreteCalculate concrete volume for strip footings or pad footings, including rebar requirements.
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Concrete Column Calculator
ConcreteCalculate concrete needed for round or square columns and piers. Includes Sonotube form sizing.
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Concrete Steps Calculator
ConcreteCalculate the volume of concrete needed for poured-in-place concrete steps or a staircase.
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Concrete Driveway Calculator
ConcreteCalculate concrete volume, cost, and number of ready-mix trucks needed for a concrete driveway.
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Deck Footing Calculator
ConcreteCalculate the number of deck footings, footing diameter, and concrete needed for a freestanding deck.
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Board Feet Calculator
Lumber & FramingCalculate board feet of lumber from thickness, width, and length. Get linear feet and cost estimates.
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Framing Lumber Calculator
Lumber & FramingCalculate the number of studs, plates, and headers needed to frame a wall based on length and stud spacing.
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Deck Lumber Calculator
Lumber & FramingCalculate all the lumber needed to build a deck: decking boards, joists, beams, posts, and hardware.
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Fence Post Calculator
Lumber & FramingCalculate the number of fence posts, rails, pickets, and concrete bags needed for any fence project.
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Roofing Shingles Calculator
RoofingCalculate the number of shingle squares, bundles, ridge cap, and roofing nails needed for your roof.
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Roof Pitch Calculator
RoofingCalculate roof pitch, slope angle in degrees, and slope percentage from rise and run measurements.
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Metal Roofing Calculator
RoofingCalculate the number of metal roofing panels, fasteners, and trim needed for a standing seam or corrugated metal roof.
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Roof Underlayment Calculator
RoofingCalculate how many rolls of roofing felt or synthetic underlayment you need, accounting for proper overlap.
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Hardwood Flooring Calculator
FlooringCalculate square footage, number of boxes, and cost for hardwood flooring installation.
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Tile Calculator
FlooringCalculate the number of tiles, bags of grout, thinset mortar, and tile spacers needed for a tile project.
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Carpet Calculator
FlooringCalculate square yards of carpet and padding needed for a room or entire house installation.
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Laminate Flooring Calculator
FlooringCalculate the number of laminate flooring boxes, underlayment rolls, and transition strips needed.
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Interior Paint Calculator
PaintCalculate how many gallons of paint and primer you need for any room — walls, ceiling, and trim.
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Exterior House Paint Calculator
PaintCalculate gallons of exterior paint needed for your house — siding, trim, and doors.
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Fence Paint & Stain Calculator
PaintCalculate gallons of paint or stain needed for any wood fence. Accounts for both sides and rail coverage.
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Wall Framing Calculator
FramingCalculate studs, plates, and headers needed to frame any wall. Works for 2×4 and 2×6 construction.
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Stair Stringer Calculator
FramingCalculate riser height, tread count, stringer length, and lumber needed for any staircase.
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Roof Rafter Calculator
FramingCalculate rafter length, board count, and lumber needed for a gable roof based on span and pitch.
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Floor Joist Span Calculator
FramingFind the maximum allowable floor joist span for common lumber sizes and species based on AWC span tables.
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Window & Door Header Calculator
FramingDetermine the correct header size for window and door openings based on span and load above.
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Subfloor Calculator
FramingCalculate OSB or plywood subfloor panels, adhesive, and screws needed for any floor area.
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Wire Gauge Calculator
ElectricalFind the correct wire gauge (AWG) for any circuit based on amperage, run length, and voltage. Checks NEC ampacity and 3% voltage drop.
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Conduit Fill Calculator
ElectricalCalculate conduit fill percentage to ensure NEC compliance. Checks 40% fill limit for 3+ conductors.
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Water Heater Size Calculator
PlumbingFind the right water heater size (gallons or BTU) for your household based on peak hour demand.
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Pipe Size Calculator
PlumbingFind the correct pipe diameter for water supply lines based on flow rate (GPM) and velocity limits.
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Drain Slope Calculator
PlumbingCalculate the required drop for drain pipes to achieve proper slope. Ensures code-compliant gravity drainage.
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Mulch Calculator
LandscapingCalculate cubic yards, bags, and cost of mulch for any landscape bed. Works for 2 cu ft and 3 cu ft bags.
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Gravel & Stone Calculator
LandscapingCalculate cubic yards, tons, and bags of gravel or crushed stone for driveways, paths, and drainage.
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Topsoil Calculator
LandscapingCalculate cubic yards and bags of topsoil needed to fill a lawn, garden bed, or raised planter.
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Sod Calculator
LandscapingCalculate square yards, pallets, and cost of sod for a new lawn or lawn renovation.
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Brick & Block Calculator
MasonryCalculate bricks or CMU blocks, mortar bags, and cost for walls, columns, and raised planters.
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Paver Calculator
MasonryCalculate how many pavers you need for a patio, walkway, or driveway — plus base gravel, sand, and cost.
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Retaining Wall Block Calculator
MasonryCalculate the number of retaining wall blocks, base gravel, and drainage stone needed for any wall.
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Stucco Calculator
MasonryCalculate bags of stucco, base coat, and finish coat needed for any wall or exterior area.
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BTU / Air Conditioner Size Calculator
HVACCalculate the correct BTU and tonnage for an air conditioner or heat pump for any room or house.
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Insulation R-Value Calculator
HVACFind the right R-value for your climate zone and calculate batts, rolls, or bags of insulation needed.
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Swimming Pool Volume Calculator
SpecialtyCalculate the volume of any swimming pool in gallons and cubic feet. Works for rectangular, oval, round, and kidney shapes.
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Solar Panel Calculator
SpecialtyCalculate how many solar panels you need to offset your electricity bill, system size in kW, and estimated savings.
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Spray Foam Insulation Calculator
SpecialtyCalculate the number of spray foam kits or board feet of foam needed for any insulation area.
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