Tile Calculator
Estimate how many tiles a floor or wall needs, including a waste allowance for cuts, breakage and future repairs.
Build with confidence
Work out how much material a job needs before you buy it. 25 calculators for flooring, walls, concrete, roofing and whole-room renovation, in metric or imperial units.
Flagship: Room Renovation Calculator
One form that returns floor area, wall area, paint, wallpaper, laminate and skirting quantities for the same room.
Room Renovation CalculatorPopular calculators
Most used calculators on the platform.
Paint Calculator
Work out how much paint a room needs from the wall area, the coverage printed on the tin and the number of coats you plan to apply.
Laminate Calculator
Calculate how many packs of laminate to buy for a room, based on the floor area, the coverage printed on the pack and a cutting allowance.
Concrete Calculator
Work out the volume of concrete a slab needs, in cubic metres or cubic yards, before you order from the plant.
Wallpaper Calculator
Estimate how many rolls of wallpaper a room needs from the wall area, the roll size and an allowance for pattern matching.
Wall Area Calculator
Get the wall area of a room with doors and windows deducted. This is the number that paint, wallpaper, plaster and putty calculators all build on.
Browse by category
Flooring
Work out how much flooring material a room needs before you buy: tiles, laminate, parquet, screed and skirting, plus the floor area they are all based on.
Walls
Everything that covers a wall: wall area, paint, wallpaper, plaster and putty. Start from the wall area and reuse it across the other calculators.
Concrete
Volume and mix quantities for poured concrete work. These are material estimates: the concrete grade and the structural design still come from your engineer or supplier.
Construction
Masonry and structure: bricks, blocks, mortar, drywall, reinforcement and foundations. These calculations feed each other — brick work leads to mortar, foundations lead to concrete and rebar.
Roofing
Roof surface area and sheet counts, and the fence calculator that shares the same linear estimating logic. Roof geometry is simplified to a symmetrical gable — check complex roofs with your roofer.
Insulation
Insulation area, thickness and package counts for walls, ceilings and floors. Check the required thermal resistance for your climate and building code before fixing a thickness.
Renovation
Room-level calculations that combine several trades at once: floor area, wall area, volume and the flagship calculator that estimates a whole room's materials from one set of measurements.
How to use the calculators
- Pick the calculator for your task, or search by name above.
- Enter measurements in metric or imperial units — switch at any time.
- Read the answer, the supporting values and the waste-adjusted purchase quantity.