How Much Paint Do I Need?
Divide total wall area by coverage rate: Flat: 400 sqft/gal, Eggshell: 350, Satin: 325, Semi-gloss: 300. Multiply by coats (usually 2). A 12×15ft room with 8ft ceilings = ~430 sqft walls → 3 gallons for 2 coats.
Divide total wall area by coverage rate: Flat: 400 sqft/gal, Eggshell: 350, Satin: 325, Semi-gloss: 300. Multiply by coats (usually 2). A 12×15ft room with 8ft ceilings = ~430 sqft walls → 3 gallons for 2 coats.
Use this free paint coverage calculator to get instant, accurate results for your construction project. Simply enter your measurements above and the calculator will automatically compute the result using industry-standard formulas.
Pro Tip: Always add 10-15% extra material to account for waste, cuts, and job-site conditions. This is standard practice recommended by experienced contractors.