How much paint do you need for a 10×10 room?

For a 10×10 ft room with 8 ft ceilings (one door, two windows), the walls measure 269 sq ft. Two coats take 1.54 gallons — buy 2 gallons. The ceiling needs another 1 gallon for two coats.

Change the numbers

The calculator below is pre-filled for this project. Adjust any value — including feet and inches — and the results update instantly.

ftin
ftin
ftin
pcs

Each counts as 21 sq ft (3×7 ft).

pcs

Each counts as 15 sq ft (3×5 ft).

sq ft

Check the can; 350–400 is typical.

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Your results

Wall paint to buy2 gallons
Paintable wall area269 sq ft
Exact wall paint (2 coats)1.54 gal
Primer, if needed (1 coat)1 gallon
How much paint do you need for a 10×10 room — diagram

Wall paint for a 10×10 room by ceiling height

Two coats, 350 sq ft per gallon, one door and two windows subtracted.

Ceiling heightWall areaExact paintBuy
8 ft269 sq ft1.54 gal2 gallons
9 ft309 sq ft1.77 gal2 gallons
10 ft349 sq ft1.99 gal2 gallons

Ceiling paint

The ceiling is 100 sq ft. One coat needs 2 quarts; two coats need 1 gallon. Flat ceiling paint hides imperfections best.

Buying for this room

Walls and ceiling together come to about 2.1 gallons, so single gallons and quarts are the right size. If you plan to paint other rooms the same color, a 5-gallon bucket may still be the better buy. Need primer for new drywall or a big color change? Plan on 1 gallon for the walls.

The math

2 × (10 + 10) × 8 ft = 320 sq ft − 1 door (21) − 2 windows (30) = 269 sq ft 269 × 2 coats ÷ 350 = 1.54 gallons

Common questions

How many gallons of paint for a 10x10 room?

2 gallons for two coats on the walls with 8 ft ceilings, plus 1 gallon if you paint the ceiling.

How much paint for a 10x10 room with 9 ft ceilings?

2 gallons for two coats on the walls.

Is one gallon enough for a 10x10 room?

One gallon covers one coat on the walls (0.77 gal needed), but you'll want 2 gallons for two coats.

Want the full method, tips and other sizes? See the paint calculator guide.

Last reviewed November 1, 2026. Results are estimates — confirm with your supplier.

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