12 × 16 ft room: the short answer
With 8 ft walls, a 12 × 16 ft room has about 448 sq ft of wall. For 2 coats that's roughly 2.6 gallons — the smart buy is 2 gal + 3 qt.
Room size
Paint for a 12 × 16 ft room
A 12 × 16 ft room with 8 ft walls has about 448 sq ft to paint. For 2 coats that's about 2.6 gallons — buy 2 gal + 3 qt. Adjust coats, openings, or the ceiling below.
Paint needed
—Enter a room size to estimate paint.
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| Paint (with coats) | — |
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Shopping list
Run the calculator to prepare a list.
Estimate only.
Coverage is about 350 sq ft per gallon per coat for most interior paint — check the can.
Bare drywall, patches, and big colour changes soak up more, so prime first and consider an
extra coat.
Adjust for your room
Subtract big windows and doors, add the ceiling if you're painting it, and bump to three coats for a strong colour change. Prime bare or patched walls first so two coats is enough.
Coverage ≈ 350 sq ft/gal at 8 ft walls, 2 coats. Estimates only.
What a 12 × 16 ft room needs
A 12 × 16 ft room is a large bedroom, media room, or studio where painting becomes a real project: walls plus ceiling can need three or more gallons of paint across two coats. Planning the area, coverage, and primer before buying avoids both waste and mid-job store runs.
How to decide
Measure the actual wall perimeter and ceiling height rather than trusting a one-size estimate, subtract openings, and divide by the paint's listed coverage. The calculator uses 350 sq ft per gallon with two coats as a common baseline; textured walls, deep color changes, and low-quality application can all raise the real total.
Checks before you buy
- Measure the true perimeter and height instead of assuming 8 ft walls.
- Subtract all doors and windows from the paintable area.
- Buy primer and paint together and check coverage claims on both.
FAQ
How much paint for a 12 × 16 ft room?
With 8 ft walls, a 12 × 16 ft room is about 448 sq ft. For 2 coats you need roughly 2.6 gallons — the smart buy is 2 gal + 3 qt. Subtract doors and windows in the calculator for a tighter number.
How many gallons to paint a 12 × 16 ft room?
About 2.6 gallons for 2 coats at 350 sq ft per gallon. If you're painting the ceiling too, tick that option — it adds the room's footprint to the area.
Sources & verification
Source links and page assumptions reviewed .
- Sherwin-Williams: paint calculator — Assumes roughly 350–400 square feet of coverage per gallon per coat.
- Lowe's: paint calculator — Common interior paint coverage guidance of 350–400 square feet per gallon.
Estimate only, based on standard coverage at 8 ft walls and 2 coats. Coverage varies with paint, surface, and colour change. Prime bare or patched walls before painting.