Paint & Decor Coverage Calculator UK
Calculate the total paintable surface in your home. Enter wall (and ceiling) area and number of coats to see how many square metres you’ll need to cover.
How It Works
This tool multiplies your total surface area by the number of coats:
Total coverage = area × coats (m²).
To find litres of paint, divide this result by your paint’s coverage (e.g., 10 m²/L).
For measuring tips, see our How to Measure for Paint.
Choosing Paint Types
Emulsion for walls, gloss or satin for woodwork. Compare finishes in our Best Emulsion Paints 2025.
Preparing Surfaces
Repair cracks and sand before painting. Follow our Wall Preparation Guide.
Cost-Saving Tips
Buy in bulk and use primer to reduce coats needed. Read our Painting on a Budget.
Key Values
| Entity | Attribute | Value |
|---|---|---|
| Painting Project | Area | m² |
| Painting Project | Coats | Number |
| Painting Project | Coverage | m² per litre |
Frequently Asked Questions
How do I measure wall area?
Measure width × height of each surface, subtract openings, then sum all areas.
Does this include ceiling paint?
Yes—simply include ceiling dimensions in your total area input.
How many coats are needed?
Typically two coats; primer may require three in some cases.
How to convert m² to litres?
Divide total m² by your paint’s coverage rate (e.g., 10 m² per litre).
