About the Paint Calculator
Enter room dimensions, doors, windows and number of coats to estimate how much paint to buy. The calculator subtracts openings, optionally adds the ceiling and rounds up to whole gallons so you do not run short.
How to use it
Fill in the fields above. Results update automatically as you type, so you can compare scenarios in seconds. Nothing you enter is sent to a server or stored.
Are the results accurate?
The calculators use standard published formulas, but every result is an estimate for planning and education. Your real figures depend on details that vary by person, lender, employer or provider.