Construction & Engineering Calculators
Estimate materials, coverage, and structural details for real projects – from concrete slabs and asphalt driveways to roofing, rafters, tiles, and reinforcing steel.
Concrete Calculator
Work out the volume of concrete needed for slabs, footings, and foundations in cubic metres or yards.
Square Footage Calculator
Measure total area for rooms, flats, decks, and plots using simple length and width inputs.
Asphalt Calculator
Estimate asphalt tonnage for driveways, paths, and car parks based on area and thickness.
Tile Calculator
Work out how many tiles, boxes, and extra waste you need for floors, walls, or backsplashes.
Roofing Calculator
Estimate roof area, shingle bundles, or sheet counts based on dimensions and roof pitch.
Rafter Calculator
Calculate rafter length, rise, and birdsmouth cuts from span and pitch for pitched roofs.
Rebar Calculator
Estimate number, spacing, and total length of reinforcing bars for slabs, beams, and footings.