01
Floor build-up & coverings
Preparing or covering a floor
Use measured floor area once, then convert it into screed volume or whole packs of laminate using the product information you actually have.
Floors & Decorating Calculators
Start with the thing you are ordering. Use one focused calculator for a single quantity, or jump to a project planner when the job combines several materials.
FloorsPaint & wallpaperTilingInsulation
Start here
What are you working on?
Each calculator owns one clear job. Product-specific coverage, pack size and extra material stay visible instead of being hidden inside generic defaults.
02
Paint, paper & trim
Decorating a room
Keep paint coverage, wallpaper roll data and coving stock length tied to the exact products you intend to buy.
03
Tiles, adhesive & grout
Planning a tiled surface
Work through the system in order: tile quantity first, then adhesive from the exact product coverage, then grout from the actual joint geometry.
Step 1Tile CalculatorSurface area + actual tile size → whole tiles and optional whole boxes.
Step 2Tile Adhesive CalculatorTiled area + manufacturer coverage per bag → whole adhesive bags.
Step 3Grout CalculatorTile dimensions + joint width/depth + area → joint volume, with optional product conversion.
04
Rigid boards & loft rolls
Working out insulation quantities
Use the format you are actually installing. Board counts come from real board dimensions; roll counts come from the manufacturer’s stated m² coverage for that exact product and thickness.
Use the tools well
A simple estimating workflow
The calculators deliberately separate geometry from the product data that can change between brands, sizes and systems.
Measure the jobStart from a known area, perimeter or room dimensions. Do not build product assumptions into the measurement.
Use the exact product dataEnter the real coverage, board size, roll size, pack coverage or stock length shown for the product you intend to buy.
Choose extra material deliberatelyCompleted calculators start at 0% extra unless the tool is purely geometric. Add an allowance only when it reflects your layout, cuts or job conditions.
Round only when purchasingThe tool shows the theoretical quantity separately where useful, then rounds to whole tins, packs, bags, rolls, boards or lengths at the buying stage.
Whole-job planning
Need more than one quantity?
Project planners combine related measurements when a single calculator is too narrow for the job.
DecoratingRoom Decorating EstimatorBring room measurements together for a wider decorating plan.
TilingTiled Room EstimatorPlan a tiled room rather than one isolated material quantity.
InsulationLoft Insulation Quantity EstimatorUse a dedicated project route when loft insulation planning needs more context.
What these calculators do — and do not do
These tools are quantity estimators. They help turn measured geometry into an order quantity while keeping product-dependent inputs visible. They do not decide the correct paint system, tile fixing specification, insulation thickness, U-value, screed design, expansion detail or installation method for your job.
For product-dependent values, use the current manufacturer data for the exact product. For awkward layouts, diagonal patterns, complex cuts or mixed construction, verify the final order against the real site and supplier information before buying.