Concrete measurements
Slabs, bases and footings
What you need
Shopping list
Costed shopping lists and step-by-step instructions are part of Pro. Try it free for 7 days, then £7.00 a month.
Start free trialStep-by-step
Costed shopping lists and step-by-step instructions are part of Pro. Try it free for 7 days, then £7.00 a month.
Start free trialSite check from a photo
Upload a photo of your work area and we'll flag what to watch for and how to prepare.
Start free trialEight jobs, one calculator
Plastering
Boards, screws, adhesive and skim plaster
Painting
Emulsion by the litre for walls and ceilings
Concrete
Bags or ready-mix, cement and ballast
Decking
Boards, joists and fixings
Rendering
Sand, cement and render coats
Fencing
Panels, posts, gravel boards and fixings
Tiling
Tiles, adhesive and grout
Flooring
Boards, underlay and trims
How it works
1. Measure up
Grab a tape measure and enter your room or job dimensions — metric or imperial.
2. Pick your job
Eight trades covered: plastering, painting, concrete, decking, rendering, fencing, tiling and flooring.
3. Buy once, buy right
Get quantities with waste built in, a costed shopping list at researched UK trade prices, and the method step by step.
Free to use — Pro when you're ready to build
Every calculator gives you quantities free. Pro (£7.00 a month, 7 days free) adds the costed shopping list, step-by-step method, a photo site check, saved projects and a PDF to take to the merchant.
See what Pro includes →From the workshop notebook
Short guides on getting quantities right before you buy.
How much paint do I need?
Work out how many litres of emulsion a UK room really needs: wall area, coats, coverage and waste — with a worked example.
How many plasterboard sheets do I need?
Sizes, wall area, ceilings and waste: a practical way to work out plasterboard quantities for a UK room, plus skimming and adhesive.
Concrete: bags or ready-mix?
How to work out concrete volume in cubic metres, when bagged mix stops making sense, and how ready-mix deliveries are priced.
How many decking boards do I need?
Board coverage, spacing gaps, waste and fixings: how to calculate decking board quantities for a UK garden deck.