Building Calculators
Free UK building-material calculators for concrete, mortar, render, screed, brickwork, roof tiles & cladding. British Standards and 2026 UK prices.
Building
Concrete Volume Calculator
Slabs, footings, columns and steps. Ready-mix vs bagged, reinforcement mesh, embodied carbon and adjustable waste.
Building
Muck Away Calculator
Excavation volume, grab-lorry loads and skip comparison. 9 soil types, swell factor and 2026 disposal costs.
Building
Skip Hire Calculator
Right skip size for any waste type. 10 waste categories, weight limits, permit costs and cost-optimised selection.
Building
Mortar Mix Calculator
Sand and cement quantities for any mortar mix ratio and wall area.
Building
Brick & Block Calculator
Bricks or blocks required based on wall dimensions and bond pattern.
Building
Roof Tile Calculator
Tiles or slates needed for any roof pitch and area, including ridge and valley.
Building
Floor Screed Calculator
Sand and cement volumes for a level interior floor screed at any depth.
Building
Sand Calculator
Sharp sand, building sand and ballast volumes with cement-bag estimates for any mix ratio.
Building
Render Calculator
Sand and cement render quantities for scratch and top coats, monocouche bags and deductions.
Building
Cladding Calculator
Cladding boards, battens, membrane, trims and fixings for PVC, timber and cement-fibre profiles.
How these calculators work
Each building calculator works from the same UK standards a merchant or building inspector would expect. Mortar quantities use BS EN 998-2 mix designations rather than a generic ratio; concrete gives you ready-mix versus bagged with embodied carbon and reinforcement mesh; and roof tiles are worked from pitch, ridge and valley rather than flat area. Wastage and VAT are adjustable on every tool so the figure matches a real order, not a textbook one.