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Estimate paint gallons for any room — walls, ceiling, doors & windows.
Paint Coverage Calculator helps you figure out how much paint to buy before you start your project. No guesswork, no wasted gallons. Enter your room dimensions, account for doors and windows, choose how many coats you need, and get an instant estimate in gallons and quarts. FEATURES • Calculate paint needed for walls and optionally ceiling • Adjust for doors and windows automatically • Set number of coats (1, 2, or more) • Customize coverage per gallon (default 350 sq ft) • Clear breakdown of square footage • Works offline — no account required PERFECT FOR • Homeowners planning a paint project • DIYers and weekend renovators • Landlords refreshing a rental • Anyone who wants to buy the right amount the first time HOW IT WORKS 1. Enter room length, width, and wall height 2. Set doors, windows, coats, and paint coverage 3. Tap Calculate — see gallons needed instantly Stop overbuying or running back to the store mid-project. Get a quick, reliable estimate in seconds. Questions or feedback? Contact us at twoliapps@gmail.com