Paint Calculator
Estimate paint quantities, tin mixes, and rough material cost for walls, ceilings, and single surfaces.
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buildcostlab.com
Material calculators for real building jobs
BuildCostLab helps users estimate materials, waste, and rough costs with practical calculators and supporting guides.
Practical quantity tools
Metric and imperial support
Guides for common buying decisions
Calculator library
Start with the calculator that fits your job, then use the related guides to check waste, buying units, and rough material costs before you order.
Concrete Calculator
Estimate concrete volume and rough material cost for slabs, footings, and post holes.
Open clusterFlooring Calculator
Estimate packs, boards, waste, and rough material cost for laminate, wood, and vinyl plank installs.
Open clusterTile Calculator
Estimate tile count, boxes, waste, and rough material cost for wall and floor tiling.
Open clusterGravel Calculator
Estimate gravel volume, tonnage, bulk bags, and rough cost for driveways, decorative areas, and base layers.
Open clusterPaving Calculator
Estimate slabs, coverage, waste, and rough material cost for patios and paved areas.
Open clusterDecking Calculator
Estimate decking boards, joists, and rough cost for simple rectangular deck builds.
Open clusterFence Calculator
Estimate fence panels, posts, concrete, and rough cost for straight fence runs.
Open clusterTopsoil Calculator
Estimate topsoil volume, tonnage, bags, and rough cost for beds, borders, and levelling work.
Open clusterMulch Calculator
Estimate mulch volume, bags, and rough cost for beds and borders.
Open clusterCompost Calculator
Estimate compost volume, bag counts, and rough cost for soil improvement jobs.
Open clusterBark Calculator
Estimate bark coverage, volume, and bag counts for borders and pathways.
Open clusterSand Calculator
Estimate sand volume, tonnage, and rough cost for laying and filling jobs.
Open clusterBallast Calculator
Estimate ballast volume and tonnage for concrete and base applications.
Open clusterHardcore Calculator
Estimate hardcore volume, tonnage, and bag counts for sub-base work.
Open clusterSub-Base Calculator
Estimate sub-base quantity and rough cost for paving and driveway builds.
Open clusterScreed Calculator
Estimate screed volume and rough cost for floor levelling jobs.
Open clusterSelf-Levelling Compound Calculator
Estimate self-levelling compound bags and rough cost from floor area and product coverage.
Open clusterUnderlay Calculator
Estimate underlay packs or rolls and rough cost for flooring installs.
Open clusterDPM Calculator
Estimate damp-proof membrane rolls and rough cost for floor areas.
Open clusterInsulation Board Calculator
Estimate insulation boards and rough cost for wall, floor, and roof insulation.
Open clusterLoft Insulation Calculator
Estimate loft insulation rolls and rough cost from coverage area.
Open clusterAcoustic Insulation Calculator
Estimate acoustic insulation slabs or rolls for partitions and floors.
Open clusterPlasterboard Calculator
Estimate plasterboard sheets and rough cost for walls and ceilings.
Open clusterDrywall Screws Calculator
Estimate drywall screw boxes using wall or ceiling coverage as the buying driver.
Open clusterJoint Compound Calculator
Estimate joint compound tubs or bags from plasterboard coverage area.
Open clusterSkim Plaster Calculator
Estimate skim plaster bags and rough cost for wall and ceiling coverage.
Open clusterRender Calculator
Estimate render coverage, bags, and rough cost for external walls.
Open clusterMortar Calculator
Estimate mortar volume and rough cost for brick and block laying jobs.
Open clusterBrick Calculator
Estimate brick counts and rough cost from wall area and coverage assumptions.
Open clusterBlock Calculator
Estimate concrete or aerated block counts and rough cost from wall area.
Open clusterRebar Calculator
Estimate reinforcement bar lengths, pieces, and rough cost for common jobs.
Open clusterMesh Calculator
Estimate reinforcing mesh sheets and rough cost from slab area.
Open clusterRoofing Shingle Calculator
Estimate roofing shingle bundles and rough cost from roof coverage area.
Open clusterRoof Felt Calculator
Estimate roof felt rolls and rough cost for sheds, garages, and outbuildings.
Open clusterRoof Batten Calculator
Estimate batten lengths, pieces, and rough cost for roof work.
Open clusterFascia Calculator
Estimate fascia board lengths and rough cost from roofline runs.
Open clusterSoffit Calculator
Estimate soffit board quantities and rough cost for roof edges.
Open clusterGutter Calculator
Estimate gutter lengths, joints, and rough cost for simple runs.
Open clusterDownpipe Calculator
Estimate downpipe lengths and pieces for drainage runs.
Open clusterWallpaper Calculator
Estimate wallpaper rolls and rough cost for wall coverage.
Open clusterSkirting Board Calculator
Estimate skirting board lengths, pieces, and rough cost from room perimeter.
Open clusterArchitrave Calculator
Estimate architrave lengths and rough cost for doors and openings.
Open clusterCoving Calculator
Estimate coving lengths and rough cost from ceiling perimeter.
Open clusterCladding Calculator
Estimate cladding boards or panels and rough cost from wall coverage.
Open clusterTurf Calculator
Estimate turf rolls and rough cost for lawns and garden areas.
Open clusterGrass Seed Calculator
Estimate grass seed packs and rough cost from lawn area.
Open clusterArtificial Grass Calculator
Estimate artificial grass rolls and rough cost from garden coverage area.
Open clusterSleepers Calculator
Estimate landscaping sleepers and rough cost from total run lengths.
Open clusterEdging Calculator
Estimate garden edging lengths, pieces, and rough cost.
Open clusterKerb Calculator
Estimate kerb unit counts and rough cost from total run length.
Open clusterDrainage Pipe Calculator
Estimate drainage pipe lengths, pieces, and rough cost for runs.
Open clusterDucting Calculator
Estimate ducting lengths and rough cost for service runs.
Open clusterGeotextile Membrane Calculator
Estimate geotextile membrane rolls and rough cost from covered area.
Open clusterPopular starting points
These calculators cover some of the most common jobs people price and plan first, from paint and concrete to roofing and topsoil.
Paint Calculator
Estimate paint quantities, tin mixes, and rough material cost for walls, ceilings, and single surfaces.
View clusterConcrete Calculator
Estimate concrete volume and rough material cost for slabs, footings, and post holes.
View clusterTopsoil Calculator
Estimate topsoil volume, tonnage, bags, and rough cost for beds, borders, and levelling work.
View clusterInsulation Board Calculator
Estimate insulation boards and rough cost for wall, floor, and roof insulation.
View clusterBrick Calculator
Estimate brick counts and rough cost from wall area and coverage assumptions.
View clusterRoofing Shingle Calculator
Estimate roofing shingle bundles and rough cost from roof coverage area.
View clusterBrowse by project type
Each topic area brings related calculators and guides together so you can move from a quick estimate to a more confident buying decision.
Paint Estimating
Estimate paint quantities, tin mixes, and rough material cost for walls, ceilings, and single surfaces.
Concrete Estimating
Estimate concrete volume and rough material cost for slabs, footings, and post holes.
Flooring Estimating
Estimate packs, boards, waste, and rough material cost for laminate, wood, and vinyl plank installs.
Tile Estimating
Estimate tile count, boxes, waste, and rough material cost for wall and floor tiling.
Plan the job before you buy
A simple quantity result is only the start. The guides on this site help you think through waste, pack sizes, delivery format, and the practical differences between common product options.