The tool library

Choose a calculator for the job.

One high-quality calculator per practical task. Start with a measurement, see the assumptions and save a clear materials estimate.

Find the calculator for your job

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Walls & Masonry

Wall-faced materials and volume estimates with visible deductions and waste.

Estimate bricks or blocks for a wall, with opening deductions, waste and optional pack rounding.

Estimate concrete or screed volume from a rectangular pour, with practical bag rounding.

Decorating

Plan paint and wallpaper quantities before you start a room refresh.

Work out paintable wall area, litres and tins with coats, coverage and waste made explicit.

Estimate wallpaper rolls from wall dimensions, roll coverage, pattern repeat and waste.

Flooring & Tiling

Surface-covering quantities with pack rounding and practical material prompts.

Estimate tile pieces, packs and optional approximate grout and adhesive for a surface area.

Outdoor Projects

Loose materials, paving and boards for straightforward garden projects.

Estimate paving slabs or deck boards from project area, material size, layout waste and packs.

Estimate loose-material volume, approximate weight and bag or bulk-bag quantities.

Estimate soil volume and bags for a simple rectangular raised bed.

Measurement Tools

Reusable room and wall measurements to carry into other Calculator.Shop tools.

Calculate basic room floor area, wall area and perimeter, then reuse the measurement in related tools.