Measure twice. Buy once.

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.

Free calculator

Paint Calculator

Estimate wall and ceiling paint in litres or gallons, including coats and waste.

Free calculator

Concrete Calculator

Estimate concrete volume and approximate 25 kg bags for slabs and pads.

Free calculator

Gravel Calculator

Estimate gravel volume and weight for paths, drives and landscaping.

Free calculator

Soil Calculator

Estimate topsoil or compost volume and approximate bulk weight.

Free calculator

Mulch Calculator

Estimate mulch volume for beds, borders and landscaping.

Free calculator

Tile Calculator

Estimate tile count from surface area, tile dimensions and waste.

Free calculator

Flooring Calculator

Estimate flooring area and packs, including a waste allowance.

Free calculator

Decking Calculator

Estimate decking board count from deck dimensions, board width and gap.

Free calculator

Brick Calculator

Estimate bricks for a wall from wall area and bricks per square metre.

Free calculator

Plaster Calculator

Estimate plaster bags from wall area, coverage and coats.

Free calculator

Insulation Calculator

Estimate insulation packs from area and pack coverage.

Free calculator

Wallpaper Calculator

Estimate wallpaper rolls from wall area and roll coverage.

Free calculator

Roofing Calculator

Estimate roof covering area including pitch factor and waste.

Free calculator

Sand Calculator

Estimate sand volume and bulk weight.

Free calculator

Screed Calculator

Estimate screed volume and approximate 25 kg bags.

Free calculator

Deck & Fence Stain Calculator

Estimate stain needed from surface area, coats and product coverage.

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Learn before you buy

Material coverage guides

Go beyond the calculator with worked examples, conversion tables and project-specific planning guides.

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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.