Estimate wall area and the practical amount of paint to purchase.
← Back to CalculatorsPaint Calculator
Results update automatically as you type.
The estimate excludes the ceiling.
Estimates only. Verify before purchasing.
About the Paint Calculator
The Paint Calculator estimates wall area and the practical amount of paint to purchase. Enter the room or surface dimensions, openings when applicable, number of coats, and paint coverage to estimate the amount required for the project.
Paint coverage varies by product, surface condition, application method, texture, color change, and waste. The calculator provides a planning estimate and rounds purchasing guidance to practical container amounts rather than assuming every fraction can be purchased exactly.
Paint planning example
For example, a second coat roughly doubles the paint coverage required for the same paintable area, before allowing for waste or product-specific coverage differences.