Asphalt Calculator
Estimate asphalt volume and tonnes from driveway area, depth, density, and waste
38 free calculators
Home improvement material calculators for UK projects
Estimate boards, sheets, concrete, paving, mulch, turf, roofing, plasterboard, bricks, paint, flooring, tiles, decking, fencing, gravel, and roof pitch with metric inputs.
Asphalt Sealer Calculator
Estimate driveway sealer litres from surface area, coats, coverage, and waste
Baluster Spacing Calculator
Calculate baluster count and even spacing for deck railings and stair guards
Block Mortar Calculator
Estimate mortar volume and bag quantities for block or brick work
Board and Batten Calculator
Estimate battens, spacing, total board length, and waste for board and batten walls
Board Foot Calculator
Calculate board feet from timber thickness, width, length, and quantity
Brick Calculator
Estimate bricks needed for walls from wall area, brick size, mortar joints, and waste
Carpet Calculator
Calculate carpet to order from UK 4m or 5m roll widths with fitting allowance
Concrete Block Calculator
Estimate concrete blocks needed for a wall from dimensions, block size, and waste
Concrete Calculator
Calculate concrete volume and 25kg or 40kg bags for slabs, paths, post holes, and footings
Concrete Footing Calculator
Calculate concrete volume for strip footings, trench fill, and foundation runs
Concrete Steps Calculator
Estimate concrete volume for straight concrete steps from rise, tread, width, and step count
Deck Board Calculator
Estimate deck boards from deck size, board width, gap, board length, and waste
Decking Calculator
Calculate decking boards, waste allowance, and linear metres for UK deck projects
Fence Panel Calculator
Calculate fence panels, posts, post holes, and postcrete bags for UK fencing
Flooring Calculator
Calculate flooring area, waste allowance, packs, and estimated cost in m²
Grass Seed Calculator
Estimate grass seed quantity from lawn area, sowing rate, reseeding rate, and waste
Gravel Calculator
Calculate gravel, soil, sand, or aggregate volume, tonnes, bulk bags, and small bags
Mulch Calculator
Estimate mulch volume, litres, cubic metres, and bags for garden beds
Paver Base Calculator
Estimate sub-base, bedding sand, and compacted base volume for paving
Paver Calculator
Estimate paving slabs or block pavers from patio area, paver size, and waste
Plasterboard Calculator
Estimate plasterboard sheets from wall or ceiling area, sheet size, openings, and waste
Plywood Sheets Calculator
Estimate plywood sheet quantities from project area, sheet size, and waste allowance
Post Hole Concrete Calculator
Estimate concrete for fence posts, deck posts, and round post holes
Rafter Length Calculator
Calculate rafter length from span, rise, pitch angle, and overhang
Rebar Material Calculator
Estimate reinforcing bar counts and total length for slabs, footings, and grids
Retaining Wall Calculator
Estimate retaining wall blocks, backfill, cap blocks, and waste allowance
River Rock Calculator
Estimate river rock or decorative pebble volume, weight, and bags for landscaping
Roof Area Calculator
Calculate sloped roof area from footprint dimensions, pitch, and roof faces
Roof Pitch Calculator
Calculate roof pitch, angle, slope ratio, rafter length, and roof multiplier
Roofing Material Calculator
Estimate roof covering area, bundles or sheets, underlay, and waste allowance
Sand Calculator
Estimate sand volume and tonnes for bedding, paving, play areas, and landscaping
Soil Calculator
Estimate topsoil or compost volume in cubic metres, litres, bags, or bulk bags
Stone Calculator
Estimate decorative stone, aggregate, or chippings volume and tonnes
Stud Wall Framing Calculator
Estimate studs, plates, noggins, and timber length for an internal stud wall
Tile Calculator
Calculate floor or wall tiles, grout gap, waste allowance, and packs needed
Trim Moulding Calculator
Estimate skirting, architrave, trim, or moulding length with waste allowance
Turf Calculator
Estimate turf rolls needed for a lawn from area, roll coverage, and waste allowance
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Directory
Browse Home Improvement calculators and resources
Use these links to move quickly between the most useful calculators, topic groups, guides, and official resources for this category.
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Useful resources
- Planning Portal
UK planning and building control guidance for home projects.
- GOV.UK building regulations
Official guidance on when building regulations approval may be needed.
Browse by topic
Carpentry & Trim
Concrete & Masonry
- Block Mortar Calculator
- Concrete Block Calculator
- Concrete Calculator
- Concrete Footing Calculator
- Concrete Steps Calculator
- Post Hole Concrete Calculator
Deck, Patio & Driveway
- Asphalt Calculator
- Asphalt Sealer Calculator
- Baluster Spacing Calculator
- Carpet Calculator
- Deck Board Calculator
- Decking Calculator
Lawn & Landscaping
- Fence Panel Calculator
- Grass Seed Calculator
- Gravel Calculator
- Mulch Calculator
- Retaining Wall Calculator
- River Rock Calculator