Paint Calculator
Wall area less the openings, multiplied by your coat count, divided by the coverage rate on the actual product's data sheet. Answers in gallons, litres and whole containers.
(01) The room
(02) Openings to subtract
21 sq ft each (3′0″ × 7′0″)
15 sq ft each (3′0″ × 5′0″)
Deducting 51 sq ft in total. For a picture window or a double door, count it as two.
(03) The paint
- Coverage rate
- 400sq ft / gal
A typical rate for a smooth, primed surface. Bare block, stucco or heavy texture can take 20 to 30% more, and the actual figure varies by product, so check the tin.
Paint required
2.3gal
8.6 litres, 2 coats at 400 sq ft per gallon.
Suggested purchase
3 × 1 gal
Whole containers. A 5-gallon pail costs less per gallon than five cans.
Paintable area
453.0sq ft
504 sq ft of wall, less 51 sq ft of openings.
An estimate, not a quotation. Bring it to the paint desk and we'll tint to any formula while you wait.