1. Enter your measurements
Change any value to update the estimate instantly. Example prices are not live supplier quotes. Choose the actual tin size and coverage printed on the product label.
All dimensions and prices are editable. Enter zero where appropriate; results round up to whole purchasable units.
2. Your estimate
Printable shopping list
Illustrative estimates only. Check supplier specifications, site conditions and local requirements before ordering or building.
How to use the paint calculator
Measure your walls and optional ceiling, then estimate paint and whole tins with editable coverage and prices.
Worked example
A 4 × 3 m room with 2.4 m walls has 33.6 m² of gross wall area. Subtract 4 m² of openings to get 29.6 m² before adding a ceiling.
Before you order
Coverage varies by paint, surface porosity and application method. Subtract openings only once from wall area; ceilings are included using the toggle. Check manufacturer coverage and drying guidance.
Important checks
- Measure the actual project dimensions rather than relying on estimates.
- Check packaging quantities, supplier pricing and delivery conditions.
- Use the calculator as a shopping estimate, not a structural specification.