Renovation and finishing calculators
Wallpaper, tiles and paint: estimate material from room dimensions, with a cutting allowance and without subtracting windows and doors.
3 tools in this section
Rolls from the room perimeter, allowing for pattern repeat and trimming waste.
Tile calculatorTiles and boxes by area, with an allowance for cuts and grout lines.
Paint calculatorLitres and cans from wall area, coverage per m² and number of coats.
How to choose a tool
Start with the room: length, width and ceiling height cover most jobs. Wallpaper is counted by perimeter, tiles and paint by area. When material is sold in packs, the calculator rounds up — a leftover is cheaper than a second trip to the shop.
Every calculation runs in your browser: the page never sends the numbers you type to a server and keeps no history. If a result raises questions, each tool page ends with short answers about allowances and limitations.