Construction tools
Estimators and converters for building and renovation projects.
16 tools
Brick CalculatorWork out how many bricks or concrete blocks you need for a wall, including openings and waste.Concrete CalculatorWork out how much concrete you need for a slab, patio or footing — in m³, yd³ and premix bags.Cubic Meter CalculatorWork out the volume in cubic metres (m³) of a box, room, trench or cylinder from its measurements — plus litres, cubic feet and cubic yards.Decking CalculatorWork out how many deck boards and joists you need for a rectangular deck, including gaps and waste.Drywall CalculatorWork out how many drywall or plasterboard sheets you need for your walls and ceiling.Fence CalculatorFind how many fence panels and posts you need for a fence run, and how long the posts should be.Gravel CalculatorCalculate how much gravel, crushed stone, sand or topsoil you need — by volume and weight.Grout CalculatorWork out how much grout you need in kg or lb from the tile size, tile thickness and joint width.Insulation CalculatorHow many packs of insulation you need for a wall, loft or floor — from the area, thickness and coverage per pack — plus the volume in m³ or ft³.Insulation U-Value CalculatorCalculate the U-value and R-value of a wall, roof or floor from insulation thickness and λ — and the thickness you need.Ladder Angle CalculatorFind the ladder length you need, how far the feet go from the wall and how high a ladder reaches at a safe 75° angle.Paving Stone CalculatorWork out how many pavers you need, plus the bedding sand and gravel base for a patio, path or driveway.Roof Area CalculatorFind the true surface area of a sloped roof from the footprint and pitch — plus roof tiles or shingle bundles.Roof Pitch CalculatorConvert rise and run into roof pitch, angle in degrees, slope percentage and rafter length.Stair CalculatorCalculate the number of steps, riser height and total run for a straight staircase.Tile CalculatorFind how many tiles and boxes you need for a floor or wall, with waste included.