Cost to Paint a Room
Price one room without guesswork: its net paintable area × your rate, plus any add-ons, with a contingency buffer for the flaws you only find mid-wall.
A room of 561 sq ft of paintable surface at $2.00/sq ft is about $1,234.20 (per-room bands run ~$350–1,500 depending on the room — labeled). Enter your own price — a planning estimate, not a bid.
Calculator inputs
A single room is the easiest place to get an estimate exactly right, because you can measure every wall. Take the net paintable area — the perimeter times the wall height, minus the doors and windows, plus the ceiling if you are rolling it — put your price per square foot on it, add any room-specific extras, and finish with a contingency. That is the whole job on one line.
Think of the room in scope before you price it: are the ceiling and the trim included, is there a patch over the old picture hooks, is the closet part of the count? Deciding scope first is what separates an estimate that holds from one that creeps.
Formula
Room cost is area times your rate, plus add-ons, buffered:
total = (area_sqft × price_per_sqft + add‑ons) × (1 + contingency%)
Get the net area from the room paint calculator so walls and ceiling are counted correctly.
Worked example
A 12 × 15 ft room with 8 ft walls is about 381 sq ft of wall (after one door and two windows) plus a 180 sq ft ceiling — call it 561 sq ft of paintable surface. At $2.00 a square foot that is $1,122; a 10% contingency makes it $1,122 × 1.10 ≈ $1,234.
Measure first, avoid re-orders
Measure first, avoid re-orders:
- Deduct the openings. A standard door is ~21 sq ft and a window ~15 sq ft — labeled typicals you can adjust to your actual openings. Skipping them over-prices the room.
- Decide on the ceiling and trim up front. They change both the area and the add-ons; a semi-gloss trim line and a flat ceiling are extra work, not free.
- Small rooms are labor-heavy. A bathroom is mostly cutting-in around tile, fixtures and a mirror — the per-square-foot rate runs higher than an open bedroom wall, so do not be surprised by the band.
- Round the paint up, not the price. Buy whole gallons from one batch for color consistency; the cost estimate can stay to the dollar.
Reference table
Labeled per-room planning bands ($ all-in) — a sanity guide only, not a price list. They shift with room size, ceiling height, trim, prep and your local labor; enter YOUR price for the real number.
| Room | Typical all-in $ |
|---|---|
| Bedroom | $350–$850 |
| Bathroom | $150–$400 |
| Living room | $600–$1,500 |
| Kitchen (walls) | $400–$900 |
| Whole interior, average home | $2,000–$6,000 |
Frequently asked questions
How much does it cost to paint a room?
Per-room bands run roughly $350–850 for a bedroom, $150–400 for a bathroom, $600–1,500 for a living room and $400–900 for kitchen walls — labeled planning guides, not a price list. Enter your room’s area and your price above for a number that fits your job.
How do I find the paintable area of a room?
Walls = perimeter (2 × (length + width)) × wall height, minus the doors and windows. Add the ceiling (length × width) if you are painting it. The room paint calculator does this and also tells you the gallons.
Should I include the ceiling in the room cost?
Only if it is being painted. A ceiling adds its length × width to the area and is usually one coat; it often uses a flat sheen and is separate cutting-in work, so decide scope first.
Why is a small bathroom sometimes as pricey as a bedroom?
Because cost tracks labor, not just area. A bathroom is dense with fixtures, tile edges and a mirror to cut around, and it often wants a moisture-resistant satin or semi-gloss — more time per square foot than an open wall.