Paint Calculator – Gallons Needed
Calculate how many gallons of paint you need based on wall area.
How It Works
Enter room dimensions and wall height. The calculator subtracts windows and doors, then divides by 350 sq ft per gallon coverage for a one-coat estimate.
Formula
Gallons = Wall Area / 350 sq ft per gallon (one coat)
Frequently Asked Questions
How much does one gallon of paint cover?
One gallon of paint typically covers about 350 square feet with one coat on a smooth surface.
Should I buy extra paint?
Yes, round up to the nearest gallon and consider buying 10% extra for touch-ups and a second coat.