Home projects calculators
Estimate materials for painting, tiling, flooring and garden projects from measurements and supplier coverage rates.
Choose the right tool
Measure the usable area first. Enter the actual product coverage or bulk density, then add an allowance appropriate to the layout or project.
Before you calculate
Quantities are approximate. Openings, cuts, settlement and compaction can change requirements; these tools do not determine structural specifications.
14 calculators
Paint quantity from wall area ↗
Estimate litres of paint from area, coats and product coverage.
Home projectsTile count with wastage ↗
Estimate whole tiles needed for an area and entered wastage allowance.
Home projectsFlooring pack count ↗
Round flooring requirements up to whole packs.
Home projectsConcrete rectangular slab volume ↗
Estimate volume for a rectangular concrete slab.
Home projectsConcrete supply cost ↗
Estimate supply cost from volume, rate and delivery.
Home projectsWallpaper rolls from usable coverage ↗
Estimate whole rolls using coverage adjusted by you for pattern matching.
Home projectsFence panel count ↗
Estimate panel modules along a straight fence run.
Home projectsGravel bed volume ↗
Calculate loose volume for a rectangular gravel bed.
Home projectsGravel mass from entered density ↗
Convert gravel volume to estimated mass using a supplier density.
Home projectsRaised bed soil volume ↗
Calculate fill volume for a rectangular raised bed.
Home projectsMulch bag count ↗
Convert area and depth into whole bags of mulch.
Home projectsLawn seed quantity ↗
Estimate seed mass using the product's stated application rate.
Home projectsBrick count from coverage rate ↗
Estimate bricks from wall area and a verified laying rate.
Home projectsRoof slope length from rise and run ↗
Find one straight roof slope length from rise and horizontal run.