Construction Calculators
Estimate building materials for walls, slabs and other South African projects. Use the tools below to get a clear estimate without working through the formula by hand.
All construction calculators
Brick Calculator South Africa
Calculate bricks needed for a wall using its size, brick dimensions, mortar joints and a waste allowance.
Use calculatorConcrete Calculator South Africa
Calculate concrete volume for a slab, footing or column and add a practical waste allowance for ordering.
Use calculatorFoundation Calculator South Africa
Calculate foundation concrete from trench runs, dimensions, pads and an ordering allowance.
Use calculatorTile Calculator South Africa
Calculate floor or wall tiles from net area, tile size, layout, waste and full boxes.
Use calculatorPaving Bricks Calculator South Africa
Calculate paving bricks needed for a driveway, patio or path using area, pavers per square metre and waste allowance.
Use calculatorBlock and Brick Calculator
Calculate concrete blocks or bricks needed for a wall from its dimensions, unit size, mortar joint and waste allowance.
Use calculatorBrick Mortar Calculator
Estimate wet mortar, cement bags and building sand required for brickwork from wall area and mortar usage.
Use calculatorBrick Wall Calculator
Calculate bricks required for a South African wall using wall dimensions, brick size, mortar joint and waste.
Use calculatorBrickforce Calculator
Calculate brickforce length and rolls from wall length, height, reinforcement spacing, roll size and overlap allowance.
Use calculatorSand and Cement Calculator
Estimate cement bags and sand volume for mortar, plaster or screed using wet volume, mix ratio and dry-volume factor.
Use calculatorMaxi Brick Calculator
Calculate maxi bricks needed for a wall from its dimensions, brick face size, mortar joint and waste allowance.
Use calculatorRoof Tile Calculator
Estimate roof tiles and packs from roof area, tile coverage, pack size and a practical breakage allowance.
Use calculatorConcrete Slab Calculator
Calculate concrete volume for a slab from its length, width, thickness and selected waste allowance.
Use calculatorPremix Concrete Calculator
Calculate bags of premix concrete required from project dimensions, bag yield and a selected waste allowance.
Use calculatorCubic Metre Calculator
Calculate cubic metres from length, width and height with selectable metre, centimetre and millimetre units.
Use calculatorFloor Tile Calculator
Calculate floor tiles and complete boxes needed from room dimensions, tile size, box quantity and waste allowance.
Use calculatorRoof Cost Calculator
Estimate a roof project budget from roof area, material cost per square metre, labour and additional costs.
Use calculatorPlaster Calculator
Estimate wet plaster volume, cement bags and plaster sand from wall area, thickness, mix ratio and waste.
Use calculatorPaint Calculator
Calculate paint litres and tins from wall area, number of coats, product coverage, tin size and waste allowance.
Use calculatorCeiling Board Calculator
Calculate ceiling boards needed from room dimensions, board size and a cutting waste allowance.
Use calculatorConcrete Bags Calculator
Calculate premix concrete bags from required volume, bag yield and waste.
Use calculatorRoof Pitch Calculator
Calculate roof pitch angle, rise, run and sloping rafter length.
Use calculatorDrywall Stud Calculator
Estimate drywall studs and tracks from wall dimensions, spacing and waste.
Use calculatorScreed Calculator
Estimate screed volume, cement and sand from floor area, thickness and mix.
Use calculatorRebar Weight Calculator
Calculate reinforcing steel weight from bar diameter, length and quantity.
Use calculatorRoofing Sheet Calculator
Estimate metal roofing sheets from roof width, sheet cover and roof length.
Use calculatorExcavation Volume Calculator
Calculate excavated soil volume and adjusted loose volume for trenches or holes.
Use calculatorGutter and Downpipe Calculator
Estimate gutter lengths, outlets and downpipes from roof edges and spacing.
Use calculatorLaminate Flooring Calculator
Estimate laminate flooring packs, boards, underlay and waste from room measurements and product coverage.
Use calculatorDecking Board Calculator
Estimate decking boards, rows, joists and fasteners from deck dimensions, board width and spacing.
Use calculatorFence Material Calculator
Estimate fence posts, panels, concrete and wire from fence length, post spacing, gates and waste.
Use calculatorRetaining Wall Block Calculator
Estimate retaining-wall blocks from wall dimensions, block face size, buried courses and waste.
Use calculatorSkirting Board Calculator
Calculate skirting metres and full stock lengths from room perimeter, doorway deductions and waste.
Use calculatorCeiling Insulation Calculator
Estimate ceiling insulation rolls or packs from ceiling area, product coverage and installation waste.
Use calculatorWater Tank Capacity Calculator
Calculate rectangular or cylindrical water tank capacity in litres from internal dimensions.
Use calculatorRainwater Harvesting Calculator
Estimate harvestable rainwater from roof area, rainfall, collection efficiency and tank capacity.
Use calculatorHelpful guides
How Many Bricks Do You Need per Square Metre?
Read guideHow to Calculate Concrete Volume
Read guideHow to Estimate Roof Tiles for a House
Read guideWhy use these calculators
Clear calculations make it easier to compare options, check quantities and plan a realistic budget. Each tool explains the figures it uses and shows a breakdown so you can understand the result instead of receiving only one number.
How these tools help
- Complete common calculations faster.
- See the formula and assumptions behind each result.
- Compare related tools without leaving the category.