🏗️ Construction & Engineering Calculators
Materials, areas, surfaces, volumes and project estimates.
Concrete CalculatorEstimate rectangular concrete volume in cubic metres from length, width and depth.Square Footage CalculatorCalculate rectangular floor or wall area from length and width in feet.Paint CalculatorEstimate paint litres from wall area, coats and paint coverage.Tile CalculatorEstimate tile count from surface dimensions, tile dimensions and waste allowance.Gravel CalculatorEstimate gravel volume and approximate mass from area and depth.Roofing Area CalculatorEstimate simple gable roof surface area from building length, width and roof pitch.Stair CalculatorEstimate riser count and actual riser height from total rise and target riser height.Asphalt CalculatorEstimate asphalt volume and mass from length, width, depth and density.Mulch CalculatorEstimate mulch volume for a rectangular bed using length, width and depth.Soil CalculatorEstimate soil volume for a garden bed using length, width and depth.Fence CalculatorEstimate fence posts and panels from total fence length and panel width.Deck CalculatorEstimate deck surface area and boards from dimensions and board coverage width.Drywall CalculatorEstimate drywall sheets needed from wall area and sheet dimensions.Flooring CalculatorEstimate flooring area including a waste allowance.Wallpaper CalculatorEstimate wallpaper rolls from wall area, roll coverage and waste allowance.Brick CalculatorEstimate bricks needed from wall area, brick face size and waste allowance.Mortar CalculatorEstimate mortar volume from brick count and mortar allowance per brick.Rebar CalculatorEstimate total rebar length and mass from bar count, length and mass per metre.Insulation CalculatorEstimate insulation packs from area and pack coverage.Paver CalculatorEstimate pavers needed from patio area, paver dimensions and waste allowance.Lumber CalculatorEstimate board feet from board thickness, width, length and quantity.Footing CalculatorEstimate concrete volume for a rectangular footing.Pool Volume CalculatorEstimate rectangular pool water volume from length, width and average depth.Retaining Wall CalculatorEstimate retaining-wall block count from wall area and block face area.Driveway CalculatorEstimate driveway area and gravel or base volume from length, width and depth.
Free construction & engineering calculators
Choose a calculator above, enter your values and receive an instant result. Each tool works on mobile, tablet and desktop without registration.