Materials
Material quantity calculators using standard densities and coverage rates, with sensible waste margins.
Concrete Calculator
Calculate the concrete volume, number of bags and weight needed for a slab, footing or pad from length, width, depth and bag yield.
Brick Calculator
Calculate how many bricks, blocks and mortar bags you need for a wall from its length, height, brick type and waste allowance.
Gravel Calculator
Calculate how many tonnes of gravel or aggregate you need for a driveway or path from area, depth and bulk density.
Asphalt Calculator
Calculate the tonnes of hot-mix asphalt needed for a driveway or path from area, thickness and material density.
Mulch Calculator
Calculate how much mulch you need for a garden bed in cubic meters, liters, cubic yards and 50L bags from area and depth.
Board Foot Calculator
Calculate board feet from a board's nominal thickness, width and length, plus total cost — the standard US unit for pricing hardwood and dimensional lumber.
Cubic Yard Calculator
Convert length, width and depth into cubic yards, cubic feet and cubic meters for concrete, gravel, soil or mulch orders, with a 10% waste allowance.
Lumber Calculator
Calculate total lumber length and cost from piece count, length per piece and price per meter, with an adjustable waste allowance for cuts and offcuts.
Wall Area Calculator
Calculate gross and net wall area from perimeter and height, subtracting standard door and window openings, for paint, drywall or siding estimates.
Square Yard Calculator
Convert a length and width in feet into square yards, square feet and square meters. Standard divide-by-9 conversion used for carpet and flooring.
Gallons per Square Foot Calculator
Estimate gallons of paint, sealer or coating from area, coverage rate (sq ft per gallon) and number of coats. Includes liters and gal/ft².