One wall

Wall paint calculator

For the accent wall, the touch-up that grew, or the one wall the movers ruined. Width times height, minus the openings, times coats.

Your wall

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Paintable area—
Exact gallons needed—
CC-1W · single wall350 sq ft / gal / coat
Going dark? Ask the paint desk to tint a quart of primer gray to go under it. One gray coat plus two color coats beats four color coats, in money and in Saturday.

How the math works

One wall is width times height: 12 ft wide under an 8 ft ceiling is 96 sq ft. Subtract 20 sq ft per door and 15 per window sitting in that wall. Two coats on the bare 96 is 192 sq ft of spreading, or 0.55 gallons at 350 sq ft per gallon. That rounds to a gallon, and the leftover is your touch-up stash; accent walls collect scuffs like a hallway.

Questions people ask

How much paint do I need for one accent wall?

A quart usually will not make it: a 12 ft wall under 8 ft ceilings is 96 sq ft, and two coats is 192 sq ft of spreading, which is 0.55 gallons. The calculator rounds that to one gallon, and for deep accent colors that is the right call anyway because dark bases often want a third coat.

Why do dark colors need three coats?

Deep reds, navies, and near-blacks use tint bases with less white pigment, which is what does the hiding. Over a light wall they streak at two coats. A gray-tinted primer under the color fixes most of it; otherwise budget the third coat.

Do I subtract the window in the wall?

Yes, same as a whole room: 15 sq ft per window, 20 per door. On a single wall those deductions are a big share of the area, so they matter more here than anywhere.