Trade calculators that give you quantities you can order
The same calculators that sit inside EstiMate, free and with no login: bags, tonnes, sheets, tiles and litres with sensible UK waste allowances — and the method written out underneath so you can check the maths.
Concrete & screed calculator
Free UK concrete calculator: work out m³ of concrete for slabs, footings and paths, plus cement bags, sand and aggregate for C20, C25, C30 and 1:4 screed mixes.
Brickwork & blockwork calculator
Free UK brick calculator: bricks or blocks for a wall by area, mortar cement and sand, and number of courses — stretcher, English or Flemish bond, with waste.
Sand & cement mortar calculator
Free mortar calculator: cement bags and sand for brickwork, blockwork, pointing and bedding at 1:3, 1:4, 1:5 or 1:6, from the wall area or mortar volume.
Plastering calculator
Free plastering calculator: bags of multi-finish, bonding, hardwall or board finish per coat from wall and ceiling areas, with waste. Skim, board-and-skim or two-coat.
Rendering calculator
Free external render calculator: coats, mix ratio, 25 kg cement bags and sand tonnage for sand-and-cement render from the wall area, with waste.
Tiling calculator
Free tile calculator: number of tiles, adhesive bags and grout for walls and floors from tile size, area and layout pattern — straight, brick bond, herringbone or diagonal — with waste.
Screeding calculator
Free screed calculator: volume in m³ and bags for sand-and-cement, liquid (anhydrite) and self-levelling screeds from floor area and depth, with waste.
Flooring calculator
Free flooring calculator: packs of laminate, LVT or engineered wood, carpet and carpet tiles, and underlay rolls from room dimensions, with waste for the layout.
Paint coverage calculator
Free paint calculator: litres of paint for walls and ceilings from room dimensions, number of coats and coverage per litre, with a tin-size recommendation and openings deducted.
Roofing calculator
Free UK roof tile calculator: roof area from plan size and pitch, tiles or slates needed for your tile type, batten metres and underlay rolls, with waste.
Stud partition calculator
Free stud wall calculator: number of studs, noggins, head and sole plates, plasterboard sheets and screws from wall length and height at 400 mm or 600 mm centres.
Quantities are half the quote. EstiMate does the other half.
Drop the numbers into a priced, branded quote your client can accept online — free for your first three jobs a month.
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