Calculators
Interiors and drywall
Published tools and reviewed guidance for interior wall board calculations.
Calculators
Drywall board calculator for wallsCalculate boards for rectangular walls, openings, layers, waste, packages and optional cost.Room paint calculatorCalculate paint containers for walls, openings, ceiling, coats and label coverage.Paint surface calculatorCalculate paint litres and containers from net area, coats, product coverage and allowance.Drywall studs and tracksEstimate wall studs and tracks from wall dimensions, stud spacing and stock lengths.Drywall ceiling profilesEstimate ceiling profiles and hangers from room dimensions and the specified system spacing.Suspended ceiling tilesEstimate suspended ceiling tiles and cartons from ceiling area, tile size and allowance.Ceiling perimeter trimCalculate ceiling perimeter trim pieces from room dimensions, stock length and allowance.Plaster quantityCalculate plaster mass and whole bags from area, thickness and the product's stated consumption.Skim coat quantityEstimate skim coat mass and bags using area, application basis and product consumption.Wallpaper rollsCalculate wallpaper rolls from complete drops, wall height, roll dimensions and pattern repeat.Drywall joint compoundEstimate drywall joint compound mass and packages from board area and product consumption.Drywall screwsEstimate drywall screws and boxes from boarded area, layers and specified screw consumption.Material purchase costEstimate whole packages, surplus and total purchase cost from your quantity and supplier price.
Essential guides
View all guides- Drywall quantity limitationsCount faces and layers explicitly, then check framing and accessories against the chosen system.
- How to measure wallsMeasure separate rectangular wall surfaces before calculating boards.
- Layers and waste allowanceCount cladding layers and apply the allowance once, after deducting openings.
- Plaster and skim coat consumptionChoose per-mm or per-coat consumption, measure thickness and turn planned mass into whole bags.
About this category
Use these tools for focused quantity estimates. Review the scope and limitations shown with each calculator before using a result for purchasing or planning.