Construction Calculators
Material estimates for home improvement and building projects, with the assumptions spelled out. Always add waste and check with your supplier — these are estimates, not engineering guarantees.
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Square Footage CalculatorAdd up the area of rooms or spaces in square feet or square metres.
Paint CalculatorHow much paint you need for a room, including coats and openings.
Flooring CalculatorFlooring area with waste, boxes needed and cost.
Tile CalculatorNumber of tiles and boxes for a floor or wall, including grout joints.
Concrete CalculatorConcrete volume for slabs, footings, columns and steps — bags or ready-mix.
Gravel CalculatorGravel volume and weight (tonnes/tons) for driveways and paths.
Sand CalculatorSand volume and weight for bedding, sandboxes and fill.
Topsoil CalculatorTopsoil for lawns and garden beds in cubic metres/yards and tonnes.
Mulch CalculatorMulch volume and number of bags for garden beds.
Asphalt CalculatorAsphalt tonnage for driveways and paving.
Drywall CalculatorDrywall/plasterboard sheets, screws, tape and compound for a room.
Wallpaper CalculatorRolls of wallpaper for a room, allowing for pattern repeat.
Brick CalculatorBricks or blocks and mortar for a wall.
Paver CalculatorPavers, base gravel and bedding sand for a patio or path.
Fence CalculatorPosts, rails and pickets for a fence run.
Deck CalculatorDeck boards, joists and screws for a rectangular deck.
Roofing CalculatorRoof area, squares and shingle bundles from footprint and pitch.
Roof Pitch CalculatorRoof pitch, angle and slope from rise and run.
Stair CalculatorNumber of steps, riser height, run and stringer length.
Sod CalculatorSod rolls and pallets for a new lawn.
Grout CalculatorKilograms of grout for tiles by size, thickness and joint width.
Board Foot CalculatorBoard feet (and m³) for a lumber list, with cost.
Rebar Weight CalculatorWeight of reinforcing bar by size, length and quantity.
Insulation CalculatorInsulation thickness for a target R-value, plus packages.