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Use metric or imperial inputs and deduct the openings that matter.
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Useful home-improvement calculators with clear assumptions, practical results and no guesswork. Check the formula before you buy.
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Estimates only. Calculator.Shop is not structural, compliance or professional construction advice.
Material planv1.0
Wall face9.60 m²
Openings−1.80 m²
Net area7.80 m²
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Featured calculators
01Walls & Masonry
Brick & block
Estimate bricks or blocks for a wall, with opening deductions, waste and optional pack rounding.
Open calculator →02Walls & MasonryConcrete & screed
Estimate concrete or screed volume from a rectangular pour, with practical bag rounding.
Open calculator →03DecoratingPaint
Work out paintable wall area, litres and tins with coats, coverage and waste made explicit.
Open calculator →04DecoratingWallpaper
Estimate wallpaper rolls from wall dimensions, roll coverage, pattern repeat and waste.
Open calculator →A more useful way to plan
Measure. Check. Save.
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Follow the audit path from measured area or volume to purchase quantity.
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Read the methodology →Browse by project
Choose the right measurement
Walls & Masonry
Wall-faced materials and poured-volume estimates with visible deductions and waste.
→DecoratingPlan paint and wallpaper quantities before you start a room refresh.
→Tiling & SurfacesSurface-covering quantities with pack rounding and practical grout or adhesive prompts.
→Paving & DeckingSlabs and boards for straightforward patios, paths and deck footprints.
→Garden Materials & BedsLoose materials, bulk bags and soil for paths, beds and planters.
→Measurement ToolsReusable room and wall measurements to carry into other Calculator.Shop tools.
→Plan before you start
A practical number is a better place to begin.
Use a calculator, then confirm the product guidance and your site measurements before ordering.