The short answer
One 12 × 12 ft room (334 sq ft of wall), two coats, mid-grade paint: 2 gallons = $90, plus about $40 of supplies, is $130 to DIY. Enter a quote to compare. We do not guess labor rates.
What is in the estimate
Paint for the walls (not the ceiling or trim), optional primer, and a flat supplies figure for a roller, tray, tape and drop cloth. Change any of them. Quotes vary by region, prep work and finish, so use a real quote from a painter near you.
FAQ
How much does it cost to paint a room?
Paint for a 12 × 12 ft room is about $90 at $45 a gallon for two coats, plus supplies. Your price per gallon sets the rest.
What does a pro painter charge?
It varies a lot by location, prep and finish, so we do not publish a figure. Enter a real quote to compare.
Is my own time included?
No. The DIY figure is paint, primer and supplies only.
More CoatMath tools
Paint calculatorRooms, doors, windows, coats: how much paint, and exactly which cans to buy. Ceiling, primer and trim too.Open →Wall paint calculatorAdd walls one at a time, subtract openings, and size an accent wall to the quart.Open →Ceiling paint calculatorFlat or vaulted ceilings by length and width or square feet. Gallons and the cans to buy.Open →Exterior house paint calculatorHouse size, stories, gables, doors and windows, siding type: gallons and 5-gallon buckets.Open →Square footage calculatorRectangles, L-shapes, circles and triangles, added or subtracted. Sq ft, sq yd and m².Open →Primer calculatorArea, surface and coats: gallons of primer and the cans to buy.Open →