How Much Paint for a 2000 Sq Ft House?
Quick answer: A 2000 sq ft house can need roughly 10 to 15 gallons for interior walls, but the real number depends on wall height, layout, coats, doors, windows and paint coverage.
Enter your wall area to get started.
Paint coverage formula
(Wall Area ÷ Coverage per Gallon) × Coats, then add 5–15% extra for waste and touchups.
How to use this calculator
Enter the estimated wall area, number of coats and paint coverage listed on the can. Most interior wall paints cover about 300–400 square feet per gallon, but textured walls, dark colors and primer needs can change the final amount.
Tips before buying paint
- Measure each wall and multiply width by height.
- Subtract large doors and windows if you want a tighter estimate.
- Round up to the nearest gallon so you have enough for touchups.
Popular free tools
Frequently Asked Questions
How do I calculate paint for a room?
Multiply wall width by height for each wall, add the areas together, divide by coverage per gallon, then multiply by the number of coats.
Should I buy extra paint?
Yes. A 5–15% buffer helps cover mistakes, texture, touchups and color changes.
Does this calculator work on mobile?
Yes. It runs in your browser and works on phones, tablets and desktop browsers.