Paint Calculator
Estimate paint gallons for room walls with coats and waste.
Use decimals when needed. Your estimate updates instantly and is safe to tweak before purchasing.
Read the matching guide to avoid common material ordering mistakes.
Paint Calculator FAQ
Do I include windows and doors?
For a quick estimate, use full wall area. For precise buying, subtract about 10-15% if you have large openings.
Should I round up paint?
Yes. Buy a little extra for touch-ups and color consistency.