Tile Coverage and Waste Calculator
Estimate tiles and boxes with a pattern-specific waste allowance.
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23 free tools
DIY & materials Calculators
Construction and DIY calculators for quantities, areas, volumes, materials, coverage and whole-order estimates. Each calculator explains its inputs, formula and limits.
Concrete Volume and Bag Calculator
Estimate wet concrete and bag counts using stated product yields.
Open calculator →Gravel and Hardcore Tonnage Calculator
Estimate hardcore or gravel tonnes and 800 kg bags.
Open calculator →Wallpaper Roll Calculator
Calculate full drops, repeat matching and roll quantities.
Open calculator →Area, volume & geometry Calculator
Calculate rectangular, circular, triangular and cylindrical measurements.
Open calculator →Paint coverage Calculator
Estimate litres and tins for your coats and surface area.
Open calculator →Brick and block count Calculator
Estimate masonry units from wall area, openings and joint modules.
Open calculator →Masonry mortar volume Calculator
Estimate bed and vertical joint volume in solid masonry.
Open calculator →Plasterboard sheets Calculator
Calculate sheet quantities for walls, ceilings and multiple layers.
Open calculator →Plaster bag coverage Calculator
Adjust manufacturer bag coverage for the selected plaster thickness.
Open calculator →Flooring packs Calculator
Calculate laminate, timber or vinyl packs and unused coverage.
Open calculator →Decking boards Calculator
Estimate straight decking rows, board lengths and order quantity.
Open calculator →Fence posts and panels Calculator
Estimate panel bays, end posts and post-concrete bags.
Open calculator →Roof pitch and slope Calculator
Calculate roof angle, slope length and rectangular pitched area.
Open calculator →Roof tiles and slates Calculator
Convert horizontal roof area to pitched covering and ridge units.
Open calculator →Stair rise and going Calculator
Explore riser count, stair run, angle and footprint.
Open calculator →Excavation spoil and loads Calculator
Estimate loosened spoil, weight, truck loads and disposal cost.
Open calculator →Topsoil volume and bags Calculator
Estimate topsoil needed for a target area and settled depth.
Open calculator →Sand and cement screed Calculator
Estimate dry screed materials from thickness and mix proportions.
Open calculator →Rebar weight Calculator
Calculate circular reinforcing bar weight with explicit lap lengths.
Open calculator →Pipe volume and flow Calculator
Convert internal pipe diameter and velocity to volume and flow.
Open calculator →Roof drainage flow Calculator
Calculate rainwater design flow and outlets from rated capacity.
Open calculator →Timber volume and board feet Calculator
Calculate sawn timber volume and cost for repeated pieces.
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