How much paint for a 10x10 room?
A 10x10 room needs 1.62 gallons for two coats over 284 sq ft of wall, and two gallons covers it with real room to spare.
A 10x10 ft room with 8-foot ceilings needs 1.62 gallons of paint for two coats — buy 2 × 1-gallon cans. That is 320 sq ft of gross wall, 284 sq ft after deducting one door (21 sq ft) and one window (15 sq ft), covered twice against 350 sq ft per gallon. With the standard 10% waste buffer it comes to 1.79 gallons, about $80 of paint. Having it painted runs about $396 for the walls, or $681 with the ceiling and trim.
Rates and coverage figures updated August 2026. Compiled 2026 from sources last updated 2023–2026.What to actually buy
- 2 × 1-gallon cans of wall color — $80, leaving 0.21 gal spare.
- On the walls, rounding up to 2 full gallons instead costs $80 and leaves 0.21 gal you will not use.
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What a 10x10 room is, and what that means for the job
Ten by ten is the smallest room most people paint on purpose: a nursery, a single bedroom, or the office carved out of a spare room. One window is normal here and two is unusual, which is why the 284 sq ft of net wall assumes a single 15 sq ft window and one 21 sq ft door. The furniture problem is not a bedroom's. A desk and a bookcase are heavy, awkward, full of things, and 100 sq ft of floor leaves nowhere to put them.
So this is a clear-the-room job rather than a push-it-to-the-middle job, and that works in your favor. With the floor empty you can cut in and roll all four walls in one session, and at 8 ft a 6 ft step ladder reaches every corner. The ceiling is the coin flip. Office ceilings often get skipped because nothing ever touches them; nursery ceilings almost always get painted, because the room is being redone anyway and the old white reads yellow next to fresh wall color.
The numbers behind the answer
| Ceiling height | Gross wall | Net wall | 1 coat | 2 coats | 2 coats + waste |
|---|---|---|---|---|---|
| 8 ft | 320 | 284 | 0.81 | 1.62 | 1.79 |
| 9 ft | 360 | 324 | 0.93 | 1.85 | 2.04 |
| 10 ft | 400 | 364 | 1.04 | 2.08 | 2.29 |
The arithmetic is worth seeing once: 320 sq ft of gross wall comes from 2 × (10 + 10) × 8 ft. Take off 21 sq ft for the door and 15 for the window and you have 284 sq ft to cover. Two coats is 568 sq ft of coverage, and at 350 sq ft per gallon that is 1.62 gallons. Every figure on this page comes from that one calculation.
No other common room size shares a 40-foot perimeter, so the 10x10 sits on its own in the chart. What it does share is the rule underneath it: wall paint tracks the distance around the room, not the area of the floor. That is why a 10x10 at 100 sq ft of floor needs 1.62 gallons while a room with more floor and a tighter perimeter can need less.
What to buy
Buy two gallons and stop there. The trap at this size is label math: a gallon covers 350 sq ft, the room has 284 sq ft of wall, so one gallon looks like plenty. It is plenty for one coat. Two coats is 568 sq ft, which is 1.62 gallons, or 1.79 with waste. Two gallons finishes the job and leaves about a fifth of a gallon for the scuffs you make carrying the desk back in.
Painting the ceiling and trim too
| Surface | Area | Paint, 2 coats | Buy |
|---|---|---|---|
| Walls | 284 sq ft net | 1.79 gal | 2 × 1-gallon cans |
| Ceiling | 100 sq ft | 0.63 gal | 1 × 1-gallon can |
| Trim and baseboard | 37 linear ft | 0.16 gal | 1 × quart |
What changes the answer
Ceiling height is the only ordinary thing that moves a 10x10 much. At 8 ft it is 1.62 gallons; a 9 ft ceiling adds one foot around a 40 ft perimeter, or 40 sq ft of wall, and lifts it to 1.85, while a 10 ft ceiling reaches 2.08 and breaks the two-gallon buy outright. Texture does the same from the other side: knockdown drops coverage from 350 to about 275 sq ft per gallon and lands on 2.06. Taking the window out adds wall rather than removing it, and still only gets you to 1.71. The coverage chart lists the texture numbers.
| Change | Paint needed | Effect |
|---|---|---|
| Baseline | 1.62 gal | the figure this page answers with |
| 9 ft ceiling | 1.85 gal | +0.23 gal |
| 10 ft ceiling | 2.08 gal | crosses two gallons |
| Orange-peel texture | 1.75 gal | +0.12 gal |
| Knockdown texture | 2.07 gal | crosses two gallons |
| Three coats | 2.43 gal | crosses two gallons |
| A second window | 1.54 gal | −0.09 gal — an opening removes wall you would have had to cover |
| No window at all | 1.71 gal | +0.09 gal |
Doing it yourself against hiring it out
| Route | What you pay | What it takes |
|---|---|---|
| Do it yourself | $80 of paint, plus roughly $16 of sundries | 2 × 1-gallon cans, one weekend |
| Hire it out | $396 for walls only | about 5.2 painter-hours |
| Hire it out, full room | $681 with ceiling and trim | walls, ceiling and 37 ft of trim |
A single room can also fall under a painter's job minimum, which runs $250–$500 whatever the square footage covers — mobilizing a crew costs the same for one room as for five. If you are pricing work rather than buying paint, the painting estimate calculator builds the full line-itemed bid.
A 10x10 room, answered
How many gallons does a 10x10 room take?
1.62 gallons, so buy two. A 10x10 has 40 ft of perimeter; at 8 ft that is 320 sq ft, less a 21 sq ft door and a 15 sq ft window, leaving 284 sq ft to cover twice. At 350 sq ft per gallon that is 1.62 gallons, or 1.79 with the 10% waste allowance. Two gallons covers both coats and still leaves a reserve for touch-ups after the furniture goes back.
Do I need extra paint for the ceiling in a 10x10 room?
Add about 0.57 gallons. The walls take 1.62 gallons; the ceiling is 100 sq ft, and two coats at 350 sq ft per gallon comes to 0.57 gallons of flat ceiling paint. Buy one gallon of it, because ceiling paint is a different product and cannot come out of your two wall gallons. If the ceiling is popcorn, coverage falls to about 225 sq ft per gallon and the same 100 sq ft needs 0.89 gallons, so that gallon is still right but much closer to empty.
Does a 10x10 room have an identical-paint twin size?
No. Forty feet of perimeter is unique on this list, so nothing else here needs its 1.62 gallons. The nearest neighbors are 10x12 and 11x11, both 44 ft around and both at 1.81 gallons: about 12% more paint for 20 or 21 more sq ft of floor. That gap is also why the wall-to-floor ratio here is 2.84, the highest of any size on the list. Small rooms carry the most wall per square foot of floor.
How much does it cost to paint a 10x10 room?
Two gallons at $40 a can is the whole materials list, $80, assuming you already own a roller, a tray and tape. A crew bids near $396 for the same 284 sq ft. A room this small is exactly where a $250 to $500 job minimum bites, because the price barely falls below what a larger room would cost, so adding a second room is usually the better per-wall deal. Get a contractor bid figure before you call.
Sources and method
Coverage rates come from Sherwin-Williams and Benjamin Moore product data sheets; cost ranges were compiled in August 2026 from HomeGuide and Angi/HomeAdvisor, whose own pages date from 2023 to 2026. Angi owns HomeAdvisor, so those are one source and not two. Quantities on this page assume 350 sq ft per gallon per coat on smooth primed drywall, a 21 sq ft door and a 15 sq ft window; sources put windows anywhere from 10 to 16 sq ft, so change the opening counts in the calculator if yours differ. The full constants are on the paint coverage chart, and the cost basis is set out on interior painting cost per square foot.
This is an estimate for planning, not a quote. Measure your own room before buying.