Painting calculators and cost guides

Work out how much paint and primer to buy, how many coats you need, and what it costs to paint a room or a house yourself or with a pro.

Calculators

What painters charge per room in 2026, what drives the price up, and a calculator that puts a pro range next to your DIY cost.

Oct 20, 20266 min read

Exterior painting costs $1.50 to $4 per square foot of home in 2026. See prices by house size, what raises them, and check a quote you got.

Oct 20, 20265 min read

Work out how many gallons of exterior paint your house needs, including gable ends, windows, doors and rough siding like stucco or brick.

Oct 20, 20265 min read

Two coats is the usual answer, but not always. When one coat is enough, when you need three, and how primer changes the count.

Oct 20, 20264 min read

Enter your room size and get gallons or liters of paint for the walls and ceiling, with doors, windows and coats already taken off.

Oct 20, 20266 min read

Find out how many gallons or liters of primer to buy, plus when primer is worth it: new drywall, stains, bare wood and big color changes.

Oct 20, 20264 min read