Free tool

Interior painting cost calculator

A single-room estimator: walls plus an optional ceiling, one paint variant, quick door/window deductions. For a full multi-room project with trim and doors, see Pro.

Room

Length (ft)Width (ft)Height (ft)

Include walls Include ceiling (same paint) Deduct doors/windows

Opening entry

Doors (20 ft² each)Windows (15 ft² each)

Paint

Coverage and price below start as labeled sample values — edit them for your actual product.

CoatsCoverage (sqft/gal, sample)Waste %

Price per gallon ($, sample) Estimate labor

Result

Enter the room's length and width to see your estimate — or load the sample room below.

Need trim, doors, or multiple rooms in one project?See Pro pricing and what's included.

Prefer one piece of software over separate calculators?See what painting estimating software should do.

More free tools

Exterior painting cost calculator — estimate paint and labor for a whole house exterior.
Painting job cost calculator — price a whole job from materials, labor, and overhead.
Painting estimate template — turn a room estimate into a printable customer document.