Paint calculator.
Paintable square footage, gallon count with coats, and a realistic labor + material price range - This is a free planning ballpark - paid PaintWright quotes use a separate estimating engine and can differ.
Planning estimate using typical 2026 pricing. Prep work (patching, sanding, caulking), furniture moving, and high-difficulty surfaces (vaulted ceilings, detailed trim) change the total.
Common questions
How many square feet does a gallon of paint cover?
One gallon covers approximately 400 sqft per coat on a smooth, primed surface. Rough or porous surfaces can drop to 300 sqft/gallon. Always buy 10% extra for touch-ups and dye-lot matching on reorders.
How much does interior painting cost per room in 2026?
An average 12×14 room with 9-ft ceilings runs $400-$700 for two coats of standard-quality paint, including labor and materials. Vaulted ceilings, detailed trim, and dark color changes add 20-40% to that number.
Do I need primer before painting?
You need primer when painting over bare drywall, drastic color changes (dark over light or vice versa), stain-blocking, or exterior wood. Self-priming paints skip a dedicated primer coat but still require good surface prep.