Paint Calculator
Wall area, coats, and coverage → how much paint to buy.
Input mode
A ~10% buffer covers cuts, touch-ups, and uneven surfaces. Adjust if needed.
Net area
302.0 sq ft
Exact gallons
1.90 gal
Buy (ceil 0.1)
1.9 gal
Liters
7.2 L
What is this tool?
Paint needs depend on paintable area, number of coats, and the product’s coverage rate (often around 350 sq ft per gallon for interior latex, but always check the can). Deduct doors and windows, then add a waste buffer for touch-ups and uneven surfaces.
How to use it
- Enter room dimensions or wall area, coats, and coverage rate.
- Set door/window counts and an optional waste percentage.
- Buy using the suggested gallons/liters after confirming the product label.
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