Free Wall Paint Calculator Online
Calculate amount of paint needed for walls and ceiling based on room dimensions, number of coats, and coverage rate. Subtract doors and windows for accuracy. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.
How It Works
Enter Room Dimensions
Input room length, width, and ceiling height.
Enter Doors & Windows
Add standard doors and windows to subtract from paintable area.
Set Coats & Coverage
Select number of coats (1-3) and paint coverage rate (sq ft/liter).
View Paint Required
See total liters needed and recommended number of paint containers to buy.
Frequently Asked Questions
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