30+ Construction & DIY Tools

All Calculators

Browse our full range of material calculators. Every tool is built to UK trade standards with current 2026 material pricing data.

Last reviewed 15 May 2026
All UK standards
2026 pricing
Mobile optimized
Project Estimators
7 tools
Estimators
Patio Material Estimator
Full shopping list: MOT Type 1, sharp sand bed and slab count for any patio size.
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Estimators
Decking Project Estimator
Complete master list: decking boards, framing joists, posts, postcrete and fixings.
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Estimators
Block Wall Estimator
Blocks, building sand and cement for mortar, and concrete for the trench footing.
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Estimators
Fencing Project Estimator
Panels, feather edge boards, posts and postcrete for your new fence.
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Estimators
Driveway Project Estimator
MOT sub-base, sharp sand bedding and block paver count for driveways.
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Estimators
Shed Base Estimator
MOT sub-base, DPM, timber formwork and complete concrete mix for a professional base.
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Estimators
Lean-To Project Estimator
Full structural estimate for timber carports and shelters: plates, posts, rafters and roofing.
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Building
9 tools
Building
Concrete Volume Calculator
Slabs, footings, columns and steps. Ready-mix vs bagged, reinforcement mesh, embodied carbon and adjustable waste.
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Building
Muck Away Calculator
Excavation volume, grab lorry loads and skip comparison. 9 soil types, swell factor and 2026 disposal costs.
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Building
Skip Hire Calculator
Right skip size for any waste type. 10 waste categories, weight limits, permit costs and cost-optimised selection.
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Building
Mortar Mix Calculator
Sand and cement quantities for any mortar mix ratio and wall area.
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Building
Brick & Block Calculator
Bricks or blocks required based on wall dimensions and bond pattern.
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Building
Roof Tile Calculator
Tiles or slates needed for any roof pitch and area, including ridge and valley.
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Building
Floor Screed Calculator
Sand and cement volumes for a level interior floor screed at any depth.
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Building
Sand Calculator
Sharp sand, building sand and ballast volumes with cement bag estimates for any mix ratio.
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Building
Render Calculator
Sand and cement render quantities for scratch and top coats, moncouche bags, and deductions.
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Paving & Groundworks
4 tools
Paving
Gravel Tonnage Calculator
Decorative gravel tonnes for driveways and paths at any depth and area.
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Paving
Sub-Base (MOT Type 1)
Hardcore tonnes with 20% wacker-plate compaction factor built in.
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Paving
Paving Slab Calculator
Slab count for any patio area, factoring in joint gaps and wastage.
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Paving
Block Paving Calculator
Block paving count and bags of kiln-dried jointing sand for any area.
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Landscaping & Gardens
5 tools
Landscaping
Topsoil & Compost
Soil or compost volume for raised beds, borders and lawn preparation.
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Landscaping
Lawn Turf Calculator
Turf rolls for any lawn shape, with 5–10% cutting wastage included.
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Landscaping
Mulch & Bark Calculator
Woodchip or bark volume to achieve effective weed suppression depth.
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Landscaping
Garden Decking Calculator
Decking board count and linear metres for any garden deck area.
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Landscaping
Soakaway Design Calculator
Plastic crate counts or rubble volume for surface water drainage.
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Interiors & Decorating
6 tools
Interiors
Paint Calculator
Walls, ceiling and woodwork. 8 paint types, interactive wall selector, tin optimiser, mist coat guide and woodwork trim.
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Interiors
Wallpaper Calculator
Roll count accounting for pattern match type and repeat length.
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Interiors
Wall & Floor Tile Calculator
Tile count for any room, factoring in grout joints and cutting waste.
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Interiors
Plaster & Board Calculator
Plasterboard sheets and skim plaster bags for walls and ceilings.
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Interiors
Coving Calculator
Calculate exact coving lengths (2m or 3m), adhesive bags or tubs, joints, and cutting wastage.
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Interiors
Electrical Cable Size Calculator
Minimum cable cross-section for safe power delivery over any run length.
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Energy & Insulation
6 tools
Energy
Radiator BTU Calculator
Room heat loss using CIBSE method with radiator sizing and ASHP correction factor.
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Energy
Air Conditioner Calculator
Calculate AC cooling sizing in BTU, kW and Tons, with efficiency and UK running costs.
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Energy
Loft Insulation Calculator
Rolls needed to reach the recommended 270mm depth to current Building Regs.
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Energy
Loft Flooring Calculator
Chipboard panels and loft legs needed to board your loft over insulation.
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Energy
Floor Insulation Calculator
PIR boards or mineral wool for suspended or solid ground floors.
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Energy
Wall Insulation Calculator
Insulated plasterboard or stud and slab quantities for internal wall lining.
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