Free tools
How much do you need to buy?
Enter your room's measurements and we'll work out how much to buy in UK pack sizes, with standard doors and windows taken off. The working is shown so you can check it. Free, and no sign-up.
Paint calculator
Work out litres and tins from your room size, coats and coverage.
Open calculator
Tile calculator
Get a tile count and box total for a floor, walls or a kitchen splashback, with wastage built in.
Open calculatorFlooring calculator
Work out how many packs of laminate, vinyl or wood flooring to buy.
Open calculator
Wallpaper calculator
Get a roll count that accounts for pattern repeat, not just raw area.
Open calculatorSee the finished room before you buy anything.
Start a project with a photo of your room. DreamDIY shows it with the change made, then lists every material for the whole job, measured with these same calculators.