Construction Tool

Paint Calculator

Calculate how much paint you need for your room or project. Enter room dimensions, number of doors and windows, coats needed, and get an accurate estimate in gallons or quarts.

Room Length (feet)

Room Width (feet)

Ceiling Height (feet)

Number of Doors

Number of Windows

Number of Coats

Coverage per Gallon (sq ft)

Enter room dimensions to calculate paint needed. Dimensions up to 1000 ft, height up to 100 ft.

Learn More About Painting

Master painting techniques and prepare for your painting project:

Beginner Guide

Painting Basics

How to prepare, prime, and paint walls like a professional

Q&A Post

Paint Coverage Per Gallon

Understanding coverage rates and what affects them

Q&A Post

How Many Coats of Paint?

When you need one coat vs two coats for different surfaces