🏠 Whole Room
🧱 Single Wall
Room dimensions
Doors & windows to deduct
Paint settings
You'll need
0 gal
rounded up to the nearest gallon
Paintable area0 sq ft
Area with coats0 sq ft
Exact gallons0.00
1-gal cans0
Estimated paint cost
$0
$0
Coverage rates vary by paint brand, surface texture and application method — check your product label for its stated coverage.
Whole room
Perimeter × height, with an option to add the ceiling — the most common way to estimate a full room repaint.
Single wall
For an accent wall or a single surface, just enter that wall's length and height.
Doors & windows
Standard doors (~21 sq ft) and windows (~15 sq ft) are subtracted automatically so you don't over-buy.
Coats & coverage
Most jobs use 2 coats. Coverage typically runs 300–400 sq ft per gallon depending on the paint and surface.