How much material do you need?
Fast, practical quantity and coverage calculators for decorating, building and landscaping projects. No sign-up. No guesswork hidden behind a form.
Choose a material
Enter your dimensions and get an instant planning estimate.
Paint Calculator
Estimate wall and ceiling paint in litres or gallons, including coats and waste.
Free calculatorConcrete Calculator
Estimate concrete volume and approximate 25 kg bags for slabs and pads.
Free calculatorGravel Calculator
Estimate gravel volume and weight for paths, drives and landscaping.
Free calculatorSoil Calculator
Estimate topsoil or compost volume and approximate bulk weight.
Free calculatorMulch Calculator
Estimate mulch volume for beds, borders and landscaping.
Free calculatorTile Calculator
Estimate tile count from surface area, tile dimensions and waste.
Free calculatorFlooring Calculator
Estimate flooring area and packs, including a waste allowance.
Free calculatorDecking Calculator
Estimate decking board count from deck dimensions, board width and gap.
Free calculatorBrick Calculator
Estimate bricks for a wall from wall area and bricks per square metre.
Free calculatorPlaster Calculator
Estimate plaster bags from wall area, coverage and coats.
Free calculatorInsulation Calculator
Estimate insulation packs from area and pack coverage.
Free calculatorWallpaper Calculator
Estimate wallpaper rolls from wall area and roll coverage.
Free calculatorRoofing Calculator
Estimate roof covering area including pitch factor and waste.
Free calculatorSand Calculator
Estimate sand volume and bulk weight.
Free calculatorScreed Calculator
Estimate screed volume and approximate 25 kg bags.
Free calculatorDeck & Fence Stain Calculator
Estimate stain needed from surface area, coats and product coverage.
Material coverage guides
Go beyond the calculator with worked examples, conversion tables and project-specific planning guides.
Plan quantities with fewer surprises
MaterialCoverage brings common project calculations into one place: paint coverage, concrete volume, gravel weight, tile counts, flooring packs and more. Each calculator exposes the assumptions it uses so you can replace typical values with the figures printed on your chosen product.
Results are planning estimates, not engineering specifications. Real coverage can vary with surface texture, compaction, application method, cuts, pattern repeats, moisture, product formulation and site conditions.
Why use a material calculator?
Buying too little can interrupt a project; buying too much can create avoidable cost and waste. A sensible estimate starts with measured dimensions, applies the relevant coverage or density, then adds an appropriate allowance for cuts, spillage or variation.