Paint Calculator

Enter room dimensions, openings, coats, and paint coverage to estimate gallons, liters, and container counts.

Room length (ft)

Room width (ft)

Wall height (ft)

Coats

Doors + windows area (ft²)

Coverage (ft² / gallon)

Include ceiling

Waste / touch-up (%)

—Painted area

—Gallons

—Liters

—Whole 1-gal cans

How to use this Paint Calculator

Estimate paint needed for room walls and ceilings. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.