Free paint calculator that tells you exactly how many gallons of paint to buy for any room or wall. Enter room size or square footage, coats, doors, and windows. No signup, 100% private, works in your browser.
Everything runs in your browser and nothing you enter is sent anywhere. Estimates assume one gallon covers about 350 sq ft on a smooth, primed surface. Rough, porous, or dark-to-light walls soak up more, so round up and keep a quart for touch-ups.
This free paint calculator takes the guesswork out of any painting project by telling you exactly how much paint to buy before you head to the store. Enter your room length, width, and wall height, or type in the total wall area in square feet, then choose the number of coats and subtract standard doors and windows. The calculator instantly shows your paintable area, the exact gallons needed, and how many gallons to buy, rounded up so you never run short mid-wall. It uses US measurements throughout, with a default coverage of 350 square feet per gallon that you can adjust for primer, rough, or porous surfaces. Whether you are estimating interior wall paint for a single bedroom, figuring out how many gallons of paint for a whole living room, or planning a full house repaint, this tool gives a fast, reliable answer. It is one of Intellure's free tools, built to run entirely in your browser so nothing you enter is uploaded or stored, and if you run a painting business or home services company, Intellure's AI employee can handle the customer questions and bookings that come after the estimate.
Homeowners shopping for a paint job rarely wait around. The person asking for a quote on a bedroom, a whole-house repaint, or a quick touch-up books with whoever answers first, and most of that interest slips away when no one replies fast. Intellure gives you a managed AI employee that responds instantly across WhatsApp, Instagram, and your website, answers the common questions about pricing and timing, follows up with leads, and books estimates and jobs around the clock. One AI employee on a flexible monthly plan built around your budget, so you can keep painting while every inquiry still turns into a booked walkthrough.
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