Paint Calculator

Calculate how many gallons of paint you need for your room.

Room Length (ft)

Room Width (ft)

Ceiling Height (ft)

Number of Doors

Number of Windows

Number of Coats

Paint Coverage Guide

One gallon of paint typically covers about 350 square feet with one coat. This calculator subtracts standard door (~21 sq ft) and window (~12 sq ft) areas. Always buy 10% extra for touch-ups. Two coats are recommended for best results.