Construction & DIY Material Calculators
Planning a project in Newcastle-under-Lyme or Staffordshire? Our free online calculators help you work out exactly how much material you need before you start — saving you money on over-ordering and preventing delays from running short mid-job.
🧱 Structure & Groundwork
- Concrete Calculator — Work out cement, sand, and aggregate quantities for footings, slabs, and bases.
- Gravel & Hardcore Calculator — MOT Type 1, hardcore, gravel and scalpings in m³ and tonnes, with compaction buffer for plate work.
- Brick & Block Calculator — Calculate bricks per wall including mortar joints and waste allowance.
- Trigonometry (Pitch) Calculator — Find roof pitch angles, rafter lengths, and rise measurements.
- Pythagoras Calculator — Calculate diagonal measurements for squaring up foundations and frames.
🎨 Decorating & Finishing
- Paint Calculator — Estimate litres needed per room including single and double coat coverage.
- Tile Calculator — Work out tile quantities for floors and walls with cutting waste factored in.
- Wallpaper Calculator — Calculate rolls needed with pattern repeat waste allowance.
- Drying Calculator — Estimate dehumidifier hire time for plaster, flood, damp or new-build moisture (based on our 25 L/day unit).
- Unit Converter — Convert between metric and imperial measurements for materials and dimensions.
📱 Prefer a Dedicated Mobile App? Get Reckon on Google Play
For on-site tradespeople and builders needing our most comprehensive tool suite, download our companion Android app: Reckon - Smart Calculator on Google Play. Reckon features 25+ specialized precision tools including staircase rise & run, roof pitch & rafters, plasterboard, concrete tonnage, brick & block mortar, and financial VAT & margin calculations that work 100% offline on site.
All calculations are estimates based on standard UK material sizes and industry formulas. We recommend adding 5-10% to any material order to account for cutting waste and breakage. Need the tools to go with your materials? Browse our full range of hire equipment — from cement mixers, wacker plates and diggers to tile cutters and floor sanders.
Site Calculators
Quick material estimates for concrete, aggregate, paint and more — built for phones on site. Open one, get a figure, hire the kit if you need it.