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Job-site and DIY calculators for building materials, lumber, concrete, decks, roofing, and layout.
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Concrete
Construction
Volume and material calculators for concrete slabs, footings, and pours.
Browse ConcreteRoofing
Construction
Pitch and angle calculators for roof framing and material estimation.
Browse RoofingMaterials
Construction
Quantity and weight estimators for gravel, fill, and bulk construction materials.
Browse MaterialsFlooring
Construction
Square footage, waste, box, roll, and sheet counts for floor coverings and subfloor.
Browse FlooringBoard Feet Calculator
Lumber
Convert thickness, width, length, and piece count into board feet using the standard lumber tally.
Open Board FeetLinear Feet to Board Feet Converter
Lumber
Convert a run of linear feet at a nominal thickness and width into board feet.
Open Linear Feet to Board FeetConcrete Volume Slab Calculator
Concrete
Find cubic yards of concrete needed for a rectangular slab from length, width, and thickness.
Open Concrete VolumeDeck Board Count Calculator
Decks
Estimate the number of deck boards needed for a rectangular deck area at a given board width and gap.
Open Deck Board CountDeck Stair Stringer Calculator
Decks
Calculate stair rise, run, stringer length, and step count from total rise and preferred tread depth.
Open Stair StringerRoof Pitch to Angle Calculator
Roofing
Convert a roof pitch expressed as rise-over-run (e.g. 6/12) to the corresponding angle in degrees.
Open Roof Pitch to AngleGravel Tons by Area and Depth Calculator
Materials
Estimate tons of gravel or crushed stone needed for a rectangular area at a given depth and material density.
Open Gravel TonsFrench Drain Gravel Calculator
Materials
Estimate the washed drainage stone for a french drain trench in cubic yards and tons, subtracting the perforated pipe.
Open French Drain GravelTopsoil and Fill Dirt Calculator
Materials
Estimate topsoil or fill dirt for a rectangular area in cubic yards and tons, with an optional allowance for settling.
Open Topsoil and FillAsphalt Tonnage Calculator
Materials
Estimate the tons of hot-mix asphalt for a paving area from length, width, compacted thickness, and mix density.
Open Asphalt TonsPaver Base and Sand Calculator
Materials
Estimate crushed-stone base and bedding sand for a paver patio or walkway in cubic yards and tons, with a base compaction allowance.
Open Paver Base and SandExcavation Cut and Fill Calculator
Materials
Convert excavation bank volume into loose and compacted volumes with swell and shrink factors, and check the cut and fill balance.
Open Cut and FillFlooring Area & Waste Calculator (Boxes)
Flooring
Turn a room rectangle or known area, a waste percent, and coverage per box into the number of flooring boxes to order.
Open Flooring Area & WasteUnderlayment Roll Count Calculator
Flooring
Estimate rolls of foam, cork, or felt underlayment from floor area, roll coverage, and an overlap percent.
Open Underlayment RollsSubfloor Plywood / OSB Sheet Calculator
Flooring
Estimate how many 4x8 plywood or OSB panels you need to sheathe a floor area, with a cut-and-fit waste allowance.
Open Subfloor SheetsPaint Calculator: Gallons for a Room
Paint
Estimate gallons of wall paint from room size, door and window openings, coats, spread rate, and waste.
Open Room Paint GallonsPrimer Calculator: How Much Primer You Need
Paint
Estimate gallons of primer for a known area from the coat count, primer spread rate, and a waste allowance.
Open Primer AmountTrim Paint Calculator: Gallons for Baseboard and Casing
Paint
Estimate trim paint from the linear feet of baseboard, casing, and doors, the trim height, coats, and spread rate.
Open Trim Paint GallonsWood Stain Calculator: Coverage and Gallons
Paint
Estimate gallons of deck or fence stain from the area, coats, stain spread rate, and a waste allowance.
Open Wood Stain Coverage