Paint Calculator: How Much Paint Do I Need?
Enter room size, openings, coats and paint coverage to estimate litres of paint needed.
Paint needed (litres)8.56
Wall area (m²)42.8
How it is calculated
Wall area = 2 × (width + length) × height − openings. Paint = area × coats ÷ coverage. Check coverage on the tin and add 5–10% for waste.
Worked example
| Paint needed (litres) | 8.56 |
| Wall area (m²) | 42.8 |
FAQ
Does it include the ceiling?
No, walls only.
Are the results exact?
Results are estimates for information only; check official sources for binding figures.