Free Tool

Room Paint Calculator

Find out how many gallons of paint a room needs, what the materials cost if you DIY, and a ballpark for professional painting.

Paint Needed

3gallons

Paintable Area (per coat): 417 sq ft
DIY Materials: $185
Professional Labor (ballpark): $1,043
Total With a Pro (ballpark): $1,228

Paint coverage varies with surface texture, color change and application method. These numbers assume smooth, primed walls. Textured walls, bare drywall patches and dark-to-light color changes can need more paint. The professional figure is a rough ballpark, not a quote. Your real price comes from a free on-site estimate.

Want a Fixed Written Quote Instead?

Calculators can't see patching, texture or a big color change. We can. Book a free on-site estimate within 48 hours and get one fixed price that won't change once we start.

The Math

How This Calculator Works

1 Wall area is the room perimeter times the ceiling height, minus about 21 sq ft per door and 15 sq ft per window.
2 The ceiling adds length times width when you include it.
3 Gallons are area times coats, divided by the sheen's coverage (350 to 400 sq ft per gallon), rounded up.
4 Trim assumes a 6-inch baseboard around the room in semi-gloss, two coats.
5 DIY materials include paint plus about $50 in rollers, brushes, tape and drop cloths. The pro ballpark uses about $2.50 per sq ft of wall or ceiling.

Why Our Quote May Differ

We prep first. Patching nail holes, sanding glossy trim, caulking gaps and spot-priming repairs all take time and material a calculator can't see. Austin homes with orange-peel or knockdown texture also soak up more paint than smooth walls.

After a free on-site visit you get one fixed written price that lists every prep step, coat and product. It doesn't change once we start.

Get My Free Estimate