Project category

Painting & Walls calculators

Paint coverage and wall finish calculators.

Paint Calculator for Walls and Ceiling UKEnter the room dimensions in metres to calculate two-coat wall and ceiling emulsion separately. The wall takeoff deducts doors and windows; the ceiling uses length × width and keeps its own coverage, tin size, and optional price.
Wallpaper Calculator UK — Rolls with Pattern RepeatEnter the wall run and exact wallpaper label details to count full-height drops, simulate the pattern-match sequence, and round the result to whole rolls.

How these painting & walls calculators work

Each calculator starts from site measurements in metres and millimetres, converts them with a tested formula, shows the exact quantity and your waste allowance as separate lines, then rounds up to the package or order unit you actually buy. Prices are optional and always entered by you, so the estimate reflects your supplier rather than a national average.

Painting & Walls measuring guides

Step-by-step guides with worked examples and reference tables for United Kingdom.

How Much Paint Do I Need? (UK, Litres and m²)Work out emulsion for UK walls: measure in metres, deduct openings, multiply by two coats, divide by the tin's m² per litre, and round up to whole tins.