Free UK Trade Calculators
Work out exactly what a job needs - bricks, mortar, concrete and more - in metric, with UK material sizes and the working shown. Built by Eddie, who started on the tools.
Interested? Then → Electricians · Plumbers · Painters & Decorators · Builders · Plasterers · Tilers · Carpenters & Joiners · Landscapers · Roofers · Flooring Fitters · All trades
Brickwork & groundwork
- Brick Calculator - Pop in your wall length and height and this works out how many bricks you need - including a sensible wastage allowance - using the UK standard of 60 bricks per square metre.
- Mortar Calculator - Tell it how many bricks you're laying and it works out the mortar volume, plus the bags of cement and bulk bags of soft sand you'll need for a standard bricklaying mix.
- Sand Calculator - Work out how much sand you need for a bed or fill: enter the area and depth and it gives the volume, the weight in tonnes, and the number of bulk bags.
- Cement Calculator - Work out how many 25kg bags of cement you need for a given volume of mortar or concrete at a standard UK mix ratio.
- Concrete Calculator - Work out how much concrete you need for a slab, base or footing - enter the dimensions and get the volume in cubic metres, ready for ready-mix or bagged.
- Block Calculator - Work out how many concrete blocks you need for a wall using the UK standard 440 × 215mm block - dense or aerated (thermal) - with wastage included.
Plastering
- Plasterboard Calculator - Tell it the area you're boarding and the thickness you're using, and it works out how many sheets of plasterboard you need - with a sensible wastage allowance built in.
- Plaster Calculator - Put in the area you're plastering and whether you're skimming or putting on a bonding undercoat, and this works out how many 25kg bags you need - with wastage allowed for.
Decorating
- Paint Calculator - Pop in the wall area you're painting and how many coats you're putting on, and this works out how much emulsion you need - in litres and in tubs to buy.
- Wallpaper Calculator - Tell us how far your walls run, how tall they are and the pattern repeat, and this works out how many rolls to order.
Tiling
- Tile Calculator - Pop in the area you're tiling, the type of tile and the layout, and this works out how much tile to order including wastage.
- Grout Calculator - Pop in your tile size, joint width and the area you're tiling, and this works out how much grout to buy using the standard tiling formula.
- Tile Adhesive Calculator - Pop in your tiling area and how you're laying, and we'll tell you roughly how many 20kg bags of adhesive to order.
Flooring & timber
- Flooring Calculator - Tell us your floor area and flooring type, and we'll work out how many square metres to order with sensible wastage built in.
- Carpet Calculator - Give us your room size and the roll width, and we'll work out the carpet and underlay you need, allowing for the fixed widths carpet comes in.
- Plywood Calculator - Pop in the area you need to cover and we'll work out how many sheets of ply or OSB to order, with a bit spare for cuts.
Landscaping
- Decking Calculator - Tell us the size of your deck and we'll work out the boards and joist timber you need, with a little spare for cuts.
- Fence Calculator - Give us the length of your fence run and we'll work out how many panels and posts you need to order.
- Block Paving Calculator - Work out how much block paving you need for a driveway or patio, with a sensible allowance for cuts and breakages.
- Gravel Calculator - Work out how much gravel or decorative aggregate you need by area and depth, in bulk bags, cubic metres and tonnes.
Insulation
- Insulation Calculator - Work out how much loft roll or PIR board insulation you need by area, with a sensible allowance for wastage.